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dt.h File Reference
#include <pgtypes_timestamp.h>
#include <time.h>
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Data Structures

struct  datetkn
 

Macros

#define MAXTZLEN   10
 
#define USE_POSTGRES_DATES   0
 
#define USE_ISO_DATES   1
 
#define USE_SQL_DATES   2
 
#define USE_GERMAN_DATES   3
 
#define INTSTYLE_POSTGRES   0
 
#define INTSTYLE_POSTGRES_VERBOSE   1
 
#define INTSTYLE_SQL_STANDARD   2
 
#define INTSTYLE_ISO_8601   3
 
#define INTERVAL_FULL_RANGE   (0x7FFF)
 
#define INTERVAL_MASK(b)   (1 << (b))
 
#define MAX_INTERVAL_PRECISION   6
 
#define DTERR_BAD_FORMAT   (-1)
 
#define DTERR_FIELD_OVERFLOW   (-2)
 
#define DTERR_MD_FIELD_OVERFLOW   (-3) /* triggers hint about DateStyle */
 
#define DTERR_INTERVAL_OVERFLOW   (-4)
 
#define DTERR_TZDISP_OVERFLOW   (-5)
 
#define DAGO   "ago"
 
#define DCURRENT   "current"
 
#define EPOCH   "epoch"
 
#define INVALID   "invalid"
 
#define EARLY   "-infinity"
 
#define LATE   "infinity"
 
#define NOW   "now"
 
#define TODAY   "today"
 
#define TOMORROW   "tomorrow"
 
#define YESTERDAY   "yesterday"
 
#define ZULU   "zulu"
 
#define DMICROSEC   "usecond"
 
#define DMILLISEC   "msecond"
 
#define DSECOND   "second"
 
#define DMINUTE   "minute"
 
#define DHOUR   "hour"
 
#define DDAY   "day"
 
#define DWEEK   "week"
 
#define DMONTH   "month"
 
#define DQUARTER   "quarter"
 
#define DYEAR   "year"
 
#define DDECADE   "decade"
 
#define DCENTURY   "century"
 
#define DMILLENNIUM   "millennium"
 
#define DA_D   "ad"
 
#define DB_C   "bc"
 
#define DTIMEZONE   "timezone"
 
#define AM   0
 
#define PM   1
 
#define HR24   2
 
#define AD   0
 
#define BC   1
 
#define RESERV   0
 
#define MONTH   1
 
#define YEAR   2
 
#define DAY   3
 
#define JULIAN   4
 
#define TZ   5 /* fixed-offset timezone abbreviation */
 
#define DTZ   6 /* fixed-offset timezone abbrev, DST */
 
#define DYNTZ   7 /* dynamic timezone abbr (unimplemented) */
 
#define IGNORE_DTF   8
 
#define AMPM   9
 
#define HOUR   10
 
#define MINUTE   11
 
#define SECOND   12
 
#define MILLISECOND   13
 
#define MICROSECOND   14
 
#define DOY   15
 
#define DOW   16
 
#define UNITS   17
 
#define ADBC   18
 
#define AGO   19
 
#define ABS_BEFORE   20
 
#define ABS_AFTER   21
 
#define ISODATE   22
 
#define ISOTIME   23
 
#define DTZMOD   28 /* "DST" as a separate word */
 
#define UNKNOWN_FIELD   31
 
#define DTK_NUMBER   0
 
#define DTK_STRING   1
 
#define DTK_DATE   2
 
#define DTK_TIME   3
 
#define DTK_TZ   4
 
#define DTK_AGO   5
 
#define DTK_SPECIAL   6
 
#define DTK_EARLY   9
 
#define DTK_LATE   10
 
#define DTK_EPOCH   11
 
#define DTK_NOW   12
 
#define DTK_YESTERDAY   13
 
#define DTK_TODAY   14
 
#define DTK_TOMORROW   15
 
#define DTK_ZULU   16
 
#define DTK_DELTA   17
 
#define DTK_SECOND   18
 
#define DTK_MINUTE   19
 
#define DTK_HOUR   20
 
#define DTK_DAY   21
 
#define DTK_WEEK   22
 
#define DTK_MONTH   23
 
#define DTK_QUARTER   24
 
#define DTK_YEAR   25
 
#define DTK_DECADE   26
 
#define DTK_CENTURY   27
 
#define DTK_MILLENNIUM   28
 
#define DTK_MILLISEC   29
 
#define DTK_MICROSEC   30
 
#define DTK_JULIAN   31
 
#define DTK_DOW   32
 
#define DTK_DOY   33
 
#define DTK_TZ_HOUR   34
 
#define DTK_TZ_MINUTE   35
 
#define DTK_ISOYEAR   36
 
#define DTK_ISODOW   37
 
#define DTK_M(t)   (0x01 << (t))
 
#define DTK_ALL_SECS_M   (DTK_M(SECOND) | DTK_M(MILLISECOND) | DTK_M(MICROSECOND))
 
#define DTK_DATE_M   (DTK_M(YEAR) | DTK_M(MONTH) | DTK_M(DAY))
 
#define DTK_TIME_M   (DTK_M(HOUR) | DTK_M(MINUTE) | DTK_M(SECOND))
 
#define MAXDATELEN   128
 
#define MAXDATEFIELDS   25
 
#define TOKMAXLEN   10
 
#define FMODULO(t, q, u)
 
#define TMODULO(t, q, u)
 
#define DAYS_PER_YEAR   365.25 /* assumes leap year every four years */
 
#define MONTHS_PER_YEAR   12
 
#define DAYS_PER_MONTH   30 /* assumes exactly 30 days per month */
 
#define HOURS_PER_DAY   24 /* assume no daylight savings time changes */
 
#define SECS_PER_YEAR   (36525 * 864) /* avoid floating-point computation */
 
#define SECS_PER_DAY   86400
 
#define SECS_PER_HOUR   3600
 
#define SECS_PER_MINUTE   60
 
#define MINS_PER_HOUR   60
 
#define USECS_PER_DAY   INT64CONST(86400000000)
 
#define USECS_PER_HOUR   INT64CONST(3600000000)
 
#define USECS_PER_MINUTE   INT64CONST(60000000)
 
#define USECS_PER_SEC   INT64CONST(1000000)
 
#define isleap(y)   (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
 
#define JULIAN_MINYEAR   (-4713)
 
#define JULIAN_MINMONTH   (11)
 
#define JULIAN_MINDAY   (24)
 
#define JULIAN_MAXYEAR   (5874898)
 
#define JULIAN_MAXMONTH   (6)
 
#define JULIAN_MAXDAY   (3)
 
#define IS_VALID_JULIAN(y, m, d)
 
#define MIN_TIMESTAMP   INT64CONST(-211813488000000000)
 
#define END_TIMESTAMP   INT64CONST(9223371331200000000)
 
#define IS_VALID_TIMESTAMP(t)   (MIN_TIMESTAMP <= (t) && (t) < END_TIMESTAMP)
 
#define UTIME_MINYEAR   (1901)
 
#define UTIME_MINMONTH   (12)
 
#define UTIME_MINDAY   (14)
 
#define UTIME_MAXYEAR   (2038)
 
#define UTIME_MAXMONTH   (01)
 
#define UTIME_MAXDAY   (18)
 
#define IS_VALID_UTIME(y, m, d)
 
#define DT_NOBEGIN   (-INT64CONST(0x7fffffffffffffff) - 1)
 
#define DT_NOEND   (INT64CONST(0x7fffffffffffffff))
 
#define TIMESTAMP_NOBEGIN(j)   do {(j) = DT_NOBEGIN;} while (0)
 
#define TIMESTAMP_NOEND(j)   do {(j) = DT_NOEND;} while (0)
 
#define TIMESTAMP_IS_NOBEGIN(j)   ((j) == DT_NOBEGIN)
 
#define TIMESTAMP_IS_NOEND(j)   ((j) == DT_NOEND)
 
#define TIMESTAMP_NOT_FINITE(j)   (TIMESTAMP_IS_NOBEGIN(j) || TIMESTAMP_IS_NOEND(j))
 

Typedefs

typedef int32 fsec_t
 

Functions

int DecodeInterval (char **, int *, int, int *, struct tm *, fsec_t *)
 
int DecodeTime (char *, int *, struct tm *, fsec_t *)
 
void EncodeDateTime (struct tm *tm, fsec_t fsec, bool print_tz, int tz, const char *tzn, int style, char *str, bool EuroDates)
 
void EncodeInterval (struct tm *tm, fsec_t fsec, int style, char *str)
 
int tm2timestamp (struct tm *, fsec_t, int *, timestamp *)
 
int DecodeUnits (int field, char *lowtoken, int *val)
 
bool CheckDateTokenTables (void)
 
void EncodeDateOnly (struct tm *tm, int style, char *str, bool EuroDates)
 
int GetEpochTime (struct tm *)
 
int ParseDateTime (char *, char *, char **, int *, int *, char **)
 
int DecodeDateTime (char **, int *, int, int *, struct tm *, fsec_t *, bool)
 
void j2date (int, int *, int *, int *)
 
void GetCurrentDateTime (struct tm *)
 
int date2j (int, int, int)
 
void TrimTrailingZeros (char *)
 
void dt2time (double, int *, int *, int *, fsec_t *)
 
int PGTYPEStimestamp_defmt_scan (char **str, char *fmt, timestamp *d, int *year, int *month, int *day, int *hour, int *minute, int *second, int *tz)
 

Variables

char * pgtypes_date_weekdays_short []
 
char * pgtypes_date_months []
 
char * months []
 
char * days []
 
const int day_tab [2][13]
 

Macro Definition Documentation

◆ ABS_AFTER

#define ABS_AFTER   21

Definition at line 114 of file dt.h.

◆ ABS_BEFORE

#define ABS_BEFORE   20

Definition at line 113 of file dt.h.

◆ AD

#define AD   0

Definition at line 75 of file dt.h.

◆ ADBC

#define ADBC   18

Definition at line 110 of file dt.h.

◆ AGO

#define AGO   19

Definition at line 112 of file dt.h.

◆ AM

#define AM   0

Definition at line 71 of file dt.h.

◆ AMPM

#define AMPM   9

Definition at line 101 of file dt.h.

◆ BC

#define BC   1

Definition at line 76 of file dt.h.

◆ DA_D

#define DA_D   "ad"

Definition at line 60 of file dt.h.

◆ DAGO

#define DAGO   "ago"

Definition at line 35 of file dt.h.

◆ DAY

#define DAY   3

Definition at line 95 of file dt.h.

◆ DAYS_PER_MONTH

#define DAYS_PER_MONTH   30 /* assumes exactly 30 days per month */

Definition at line 244 of file dt.h.

◆ DAYS_PER_YEAR

#define DAYS_PER_YEAR   365.25 /* assumes leap year every four years */

Definition at line 235 of file dt.h.

◆ DB_C

#define DB_C   "bc"

Definition at line 61 of file dt.h.

◆ DCENTURY

#define DCENTURY   "century"

Definition at line 58 of file dt.h.

◆ DCURRENT

#define DCURRENT   "current"

Definition at line 36 of file dt.h.

◆ DDAY

#define DDAY   "day"

Definition at line 52 of file dt.h.

◆ DDECADE

#define DDECADE   "decade"

Definition at line 57 of file dt.h.

◆ DHOUR

#define DHOUR   "hour"

Definition at line 51 of file dt.h.

◆ DMICROSEC

#define DMICROSEC   "usecond"

Definition at line 47 of file dt.h.

◆ DMILLENNIUM

#define DMILLENNIUM   "millennium"

Definition at line 59 of file dt.h.

◆ DMILLISEC

#define DMILLISEC   "msecond"

Definition at line 48 of file dt.h.

◆ DMINUTE

#define DMINUTE   "minute"

Definition at line 50 of file dt.h.

◆ DMONTH

#define DMONTH   "month"

Definition at line 54 of file dt.h.

◆ DOW

#define DOW   16

Definition at line 108 of file dt.h.

◆ DOY

#define DOY   15

Definition at line 107 of file dt.h.

◆ DQUARTER

#define DQUARTER   "quarter"

Definition at line 55 of file dt.h.

◆ DSECOND

#define DSECOND   "second"

Definition at line 49 of file dt.h.

◆ DT_NOBEGIN

#define DT_NOBEGIN   (-INT64CONST(0x7fffffffffffffff) - 1)

Definition at line 305 of file dt.h.

◆ DT_NOEND

#define DT_NOEND   (INT64CONST(0x7fffffffffffffff))

Definition at line 306 of file dt.h.

◆ DTERR_BAD_FORMAT

#define DTERR_BAD_FORMAT   (-1)

Definition at line 28 of file dt.h.

◆ DTERR_FIELD_OVERFLOW

#define DTERR_FIELD_OVERFLOW   (-2)

Definition at line 29 of file dt.h.

◆ DTERR_INTERVAL_OVERFLOW

#define DTERR_INTERVAL_OVERFLOW   (-4)

Definition at line 31 of file dt.h.

◆ DTERR_MD_FIELD_OVERFLOW

#define DTERR_MD_FIELD_OVERFLOW   (-3) /* triggers hint about DateStyle */

Definition at line 30 of file dt.h.

◆ DTERR_TZDISP_OVERFLOW

#define DTERR_TZDISP_OVERFLOW   (-5)

Definition at line 32 of file dt.h.

◆ DTIMEZONE

#define DTIMEZONE   "timezone"

Definition at line 62 of file dt.h.

◆ DTK_AGO

#define DTK_AGO   5

Definition at line 145 of file dt.h.

◆ DTK_ALL_SECS_M

#define DTK_ALL_SECS_M   (DTK_M(SECOND) | DTK_M(MILLISECOND) | DTK_M(MICROSECOND))

Definition at line 186 of file dt.h.

◆ DTK_CENTURY

#define DTK_CENTURY   27

Definition at line 167 of file dt.h.

◆ DTK_DATE

#define DTK_DATE   2

Definition at line 142 of file dt.h.

◆ DTK_DATE_M

#define DTK_DATE_M   (DTK_M(YEAR) | DTK_M(MONTH) | DTK_M(DAY))

Definition at line 187 of file dt.h.

◆ DTK_DAY

#define DTK_DAY   21

Definition at line 161 of file dt.h.

◆ DTK_DECADE

#define DTK_DECADE   26

Definition at line 166 of file dt.h.

◆ DTK_DELTA

#define DTK_DELTA   17

Definition at line 157 of file dt.h.

◆ DTK_DOW

#define DTK_DOW   32

Definition at line 173 of file dt.h.

◆ DTK_DOY

#define DTK_DOY   33

Definition at line 174 of file dt.h.

◆ DTK_EARLY

#define DTK_EARLY   9

Definition at line 148 of file dt.h.

◆ DTK_EPOCH

#define DTK_EPOCH   11

Definition at line 150 of file dt.h.

◆ DTK_HOUR

#define DTK_HOUR   20

Definition at line 160 of file dt.h.

◆ DTK_ISODOW

#define DTK_ISODOW   37

Definition at line 178 of file dt.h.

◆ DTK_ISOYEAR

#define DTK_ISOYEAR   36

Definition at line 177 of file dt.h.

◆ DTK_JULIAN

#define DTK_JULIAN   31

Definition at line 171 of file dt.h.

◆ DTK_LATE

#define DTK_LATE   10

Definition at line 149 of file dt.h.

◆ DTK_M

#define DTK_M (   t)    (0x01 << (t))

Definition at line 185 of file dt.h.

◆ DTK_MICROSEC

#define DTK_MICROSEC   30

Definition at line 170 of file dt.h.

◆ DTK_MILLENNIUM

#define DTK_MILLENNIUM   28

Definition at line 168 of file dt.h.

◆ DTK_MILLISEC

#define DTK_MILLISEC   29

Definition at line 169 of file dt.h.

◆ DTK_MINUTE

#define DTK_MINUTE   19

Definition at line 159 of file dt.h.

◆ DTK_MONTH

#define DTK_MONTH   23

Definition at line 163 of file dt.h.

◆ DTK_NOW

#define DTK_NOW   12

Definition at line 151 of file dt.h.

◆ DTK_NUMBER

#define DTK_NUMBER   0

Definition at line 139 of file dt.h.

◆ DTK_QUARTER

#define DTK_QUARTER   24

Definition at line 164 of file dt.h.

◆ DTK_SECOND

#define DTK_SECOND   18

Definition at line 158 of file dt.h.

◆ DTK_SPECIAL

#define DTK_SPECIAL   6

Definition at line 147 of file dt.h.

◆ DTK_STRING

#define DTK_STRING   1

Definition at line 140 of file dt.h.

◆ DTK_TIME

#define DTK_TIME   3

Definition at line 143 of file dt.h.

◆ DTK_TIME_M

#define DTK_TIME_M   (DTK_M(HOUR) | DTK_M(MINUTE) | DTK_M(SECOND))

Definition at line 188 of file dt.h.

◆ DTK_TODAY

#define DTK_TODAY   14

Definition at line 153 of file dt.h.

◆ DTK_TOMORROW

#define DTK_TOMORROW   15

Definition at line 154 of file dt.h.

◆ DTK_TZ

#define DTK_TZ   4

Definition at line 144 of file dt.h.

◆ DTK_TZ_HOUR

#define DTK_TZ_HOUR   34

Definition at line 175 of file dt.h.

◆ DTK_TZ_MINUTE

#define DTK_TZ_MINUTE   35

Definition at line 176 of file dt.h.

◆ DTK_WEEK

#define DTK_WEEK   22

Definition at line 162 of file dt.h.

◆ DTK_YEAR

#define DTK_YEAR   25

Definition at line 165 of file dt.h.

◆ DTK_YESTERDAY

#define DTK_YESTERDAY   13

Definition at line 152 of file dt.h.

◆ DTK_ZULU

#define DTK_ZULU   16

Definition at line 155 of file dt.h.

◆ DTZ

#define DTZ   6 /* fixed-offset timezone abbrev, DST */

Definition at line 98 of file dt.h.

◆ DTZMOD

#define DTZMOD   28 /* "DST" as a separate word */

Definition at line 119 of file dt.h.

◆ DWEEK

#define DWEEK   "week"

Definition at line 53 of file dt.h.

◆ DYEAR

#define DYEAR   "year"

Definition at line 56 of file dt.h.

◆ DYNTZ

#define DYNTZ   7 /* dynamic timezone abbr (unimplemented) */

Definition at line 99 of file dt.h.

◆ EARLY

#define EARLY   "-infinity"

Definition at line 39 of file dt.h.

◆ END_TIMESTAMP

#define END_TIMESTAMP   INT64CONST(9223371331200000000)

Definition at line 287 of file dt.h.

◆ EPOCH

#define EPOCH   "epoch"

Definition at line 37 of file dt.h.

◆ FMODULO

#define FMODULO (   t,
  q,
 
)
Value:
do { \
(q) = (((t) < 0) ? ceil((t) / (u)): floor((t) / (u))); \
if ((q) != 0) (t) -= rint((q) * (u)); \
} while(0)

Definition at line 217 of file dt.h.

◆ HOUR

#define HOUR   10

Definition at line 102 of file dt.h.

◆ HOURS_PER_DAY

#define HOURS_PER_DAY   24 /* assume no daylight savings time changes */

Definition at line 245 of file dt.h.

◆ HR24

#define HR24   2

Definition at line 73 of file dt.h.

◆ IGNORE_DTF

#define IGNORE_DTF   8

Definition at line 100 of file dt.h.

◆ INTERVAL_FULL_RANGE

#define INTERVAL_FULL_RANGE   (0x7FFF)

Definition at line 24 of file dt.h.

◆ INTERVAL_MASK

#define INTERVAL_MASK (   b)    (1 << (b))

Definition at line 25 of file dt.h.

◆ INTSTYLE_ISO_8601

#define INTSTYLE_ISO_8601   3

Definition at line 22 of file dt.h.

◆ INTSTYLE_POSTGRES

#define INTSTYLE_POSTGRES   0

Definition at line 19 of file dt.h.

◆ INTSTYLE_POSTGRES_VERBOSE

#define INTSTYLE_POSTGRES_VERBOSE   1

Definition at line 20 of file dt.h.

◆ INTSTYLE_SQL_STANDARD

#define INTSTYLE_SQL_STANDARD   2

Definition at line 21 of file dt.h.

◆ INVALID

#define INVALID   "invalid"

Definition at line 38 of file dt.h.

◆ IS_VALID_JULIAN

#define IS_VALID_JULIAN (   y,
  m,
 
)
Value:
(((y) > JULIAN_MINYEAR || \
((y) == JULIAN_MINYEAR && ((m) >= JULIAN_MINMONTH))) && \
((y) < JULIAN_MAXYEAR || \
((y) == JULIAN_MAXYEAR && ((m) < JULIAN_MAXMONTH))))
#define JULIAN_MINYEAR
Definition: dt.h:273
#define JULIAN_MAXMONTH
Definition: dt.h:277
#define JULIAN_MINMONTH
Definition: dt.h:274
#define JULIAN_MAXYEAR
Definition: dt.h:276

Definition at line 280 of file dt.h.

◆ IS_VALID_TIMESTAMP

#define IS_VALID_TIMESTAMP (   t)    (MIN_TIMESTAMP <= (t) && (t) < END_TIMESTAMP)

Definition at line 289 of file dt.h.

◆ IS_VALID_UTIME

#define IS_VALID_UTIME (   y,
  m,
 
)
Value:
((((y) > UTIME_MINYEAR) \
|| (((y) == UTIME_MINYEAR) && (((m) > UTIME_MINMONTH) \
|| (((m) == UTIME_MINMONTH) && ((d) >= UTIME_MINDAY))))) \
&& (((y) < UTIME_MAXYEAR) \
|| (((y) == UTIME_MAXYEAR) && (((m) < UTIME_MAXMONTH) \
|| (((m) == UTIME_MAXMONTH) && ((d) <= UTIME_MAXDAY))))))
#define UTIME_MAXMONTH
Definition: dt.h:295
#define UTIME_MINYEAR
Definition: dt.h:291
#define UTIME_MAXDAY
Definition: dt.h:296
#define UTIME_MAXYEAR
Definition: dt.h:294
#define UTIME_MINMONTH
Definition: dt.h:292
#define UTIME_MINDAY
Definition: dt.h:293

Definition at line 298 of file dt.h.

Referenced by timestamp2tm().

◆ isleap

#define isleap (   y)    (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))

Definition at line 267 of file dt.h.

◆ ISODATE

#define ISODATE   22

Definition at line 116 of file dt.h.

◆ ISOTIME

#define ISOTIME   23

Definition at line 117 of file dt.h.

◆ JULIAN

#define JULIAN   4

Definition at line 96 of file dt.h.

◆ JULIAN_MAXDAY

#define JULIAN_MAXDAY   (3)

Definition at line 278 of file dt.h.

◆ JULIAN_MAXMONTH

#define JULIAN_MAXMONTH   (6)

Definition at line 277 of file dt.h.

◆ JULIAN_MAXYEAR

#define JULIAN_MAXYEAR   (5874898)

Definition at line 276 of file dt.h.

◆ JULIAN_MINDAY

#define JULIAN_MINDAY   (24)

Definition at line 275 of file dt.h.

◆ JULIAN_MINMONTH

#define JULIAN_MINMONTH   (11)

Definition at line 274 of file dt.h.

◆ JULIAN_MINYEAR

#define JULIAN_MINYEAR   (-4713)

Definition at line 273 of file dt.h.

◆ LATE

#define LATE   "infinity"

Definition at line 40 of file dt.h.

◆ MAX_INTERVAL_PRECISION

#define MAX_INTERVAL_PRECISION   6

Definition at line 26 of file dt.h.

◆ MAXDATEFIELDS

#define MAXDATEFIELDS   25

Definition at line 198 of file dt.h.

◆ MAXDATELEN

#define MAXDATELEN   128

Definition at line 196 of file dt.h.

◆ MAXTZLEN

#define MAXTZLEN   10

Definition at line 10 of file dt.h.

◆ MICROSECOND

#define MICROSECOND   14

Definition at line 106 of file dt.h.

◆ MILLISECOND

#define MILLISECOND   13

Definition at line 105 of file dt.h.

◆ MIN_TIMESTAMP

#define MIN_TIMESTAMP   INT64CONST(-211813488000000000)

Definition at line 286 of file dt.h.

◆ MINS_PER_HOUR

#define MINS_PER_HOUR   60

Definition at line 256 of file dt.h.

◆ MINUTE

#define MINUTE   11

Definition at line 103 of file dt.h.

◆ MONTH

#define MONTH   1

Definition at line 93 of file dt.h.

◆ MONTHS_PER_YEAR

#define MONTHS_PER_YEAR   12

Definition at line 236 of file dt.h.

◆ NOW

#define NOW   "now"

Definition at line 41 of file dt.h.

◆ PM

#define PM   1

Definition at line 72 of file dt.h.

◆ RESERV

#define RESERV   0

Definition at line 92 of file dt.h.

◆ SECOND

#define SECOND   12

Definition at line 104 of file dt.h.

◆ SECS_PER_DAY

#define SECS_PER_DAY   86400

Definition at line 253 of file dt.h.

◆ SECS_PER_HOUR

#define SECS_PER_HOUR   3600

Definition at line 254 of file dt.h.

◆ SECS_PER_MINUTE

#define SECS_PER_MINUTE   60

Definition at line 255 of file dt.h.

◆ SECS_PER_YEAR

#define SECS_PER_YEAR   (36525 * 864) /* avoid floating-point computation */

Definition at line 252 of file dt.h.

◆ TIMESTAMP_IS_NOBEGIN

#define TIMESTAMP_IS_NOBEGIN (   j)    ((j) == DT_NOBEGIN)

Definition at line 310 of file dt.h.

◆ TIMESTAMP_IS_NOEND

#define TIMESTAMP_IS_NOEND (   j)    ((j) == DT_NOEND)

Definition at line 311 of file dt.h.

◆ TIMESTAMP_NOBEGIN

#define TIMESTAMP_NOBEGIN (   j)    do {(j) = DT_NOBEGIN;} while (0)

Definition at line 308 of file dt.h.

◆ TIMESTAMP_NOEND

#define TIMESTAMP_NOEND (   j)    do {(j) = DT_NOEND;} while (0)

Definition at line 309 of file dt.h.

◆ TIMESTAMP_NOT_FINITE

#define TIMESTAMP_NOT_FINITE (   j)    (TIMESTAMP_IS_NOBEGIN(j) || TIMESTAMP_IS_NOEND(j))

Definition at line 312 of file dt.h.

◆ TMODULO

#define TMODULO (   t,
  q,
 
)
Value:
do { \
(q) = ((t) / (u)); \
if ((q) != 0) (t) -= ((q) * (u)); \
} while(0)

Definition at line 228 of file dt.h.

◆ TODAY

#define TODAY   "today"

Definition at line 42 of file dt.h.

◆ TOKMAXLEN

#define TOKMAXLEN   10

Definition at line 200 of file dt.h.

◆ TOMORROW

#define TOMORROW   "tomorrow"

Definition at line 43 of file dt.h.

◆ TZ

#define TZ   5 /* fixed-offset timezone abbreviation */

Definition at line 97 of file dt.h.

◆ UNITS

#define UNITS   17

Definition at line 109 of file dt.h.

◆ UNKNOWN_FIELD

#define UNKNOWN_FIELD   31

Definition at line 121 of file dt.h.

◆ USE_GERMAN_DATES

#define USE_GERMAN_DATES   3

Definition at line 17 of file dt.h.

◆ USE_ISO_DATES

#define USE_ISO_DATES   1

Definition at line 15 of file dt.h.

◆ USE_POSTGRES_DATES

#define USE_POSTGRES_DATES   0

Definition at line 14 of file dt.h.

◆ USE_SQL_DATES

#define USE_SQL_DATES   2

Definition at line 16 of file dt.h.

◆ USECS_PER_DAY

#define USECS_PER_DAY   INT64CONST(86400000000)

Definition at line 258 of file dt.h.

◆ USECS_PER_HOUR

#define USECS_PER_HOUR   INT64CONST(3600000000)

Definition at line 259 of file dt.h.

◆ USECS_PER_MINUTE

#define USECS_PER_MINUTE   INT64CONST(60000000)

Definition at line 260 of file dt.h.

◆ USECS_PER_SEC

#define USECS_PER_SEC   INT64CONST(1000000)

Definition at line 261 of file dt.h.

◆ UTIME_MAXDAY

#define UTIME_MAXDAY   (18)

Definition at line 296 of file dt.h.

◆ UTIME_MAXMONTH

#define UTIME_MAXMONTH   (01)

Definition at line 295 of file dt.h.

◆ UTIME_MAXYEAR

#define UTIME_MAXYEAR   (2038)

Definition at line 294 of file dt.h.

◆ UTIME_MINDAY

#define UTIME_MINDAY   (14)

Definition at line 293 of file dt.h.

◆ UTIME_MINMONTH

#define UTIME_MINMONTH   (12)

Definition at line 292 of file dt.h.

◆ UTIME_MINYEAR

#define UTIME_MINYEAR   (1901)

Definition at line 291 of file dt.h.

◆ YEAR

#define YEAR   2

Definition at line 94 of file dt.h.

◆ YESTERDAY

#define YESTERDAY   "yesterday"

Definition at line 44 of file dt.h.

◆ ZULU

#define ZULU   "zulu"

Definition at line 45 of file dt.h.

Typedef Documentation

◆ fsec_t

typedef int32 fsec_t

Definition at line 12 of file dt.h.

Function Documentation

◆ CheckDateTokenTables()

bool CheckDateTokenTables ( void  )

Definition at line 4435 of file datetime.c.

References Assert, CheckDateTokenTable(), date2j(), POSTGRES_EPOCH_JDATE, szdatetktbl, szdeltatktbl, and UNIX_EPOCH_JDATE.

Referenced by PostmasterMain().

4436 {
4437  bool ok = true;
4438 
4439  Assert(UNIX_EPOCH_JDATE == date2j(1970, 1, 1));
4440  Assert(POSTGRES_EPOCH_JDATE == date2j(2000, 1, 1));
4441 
4442  ok &= CheckDateTokenTable("datetktbl", datetktbl, szdatetktbl);
4443  ok &= CheckDateTokenTable("deltatktbl", deltatktbl, szdeltatktbl);
4444  return ok;
4445 }
static const datetkn datetktbl[]
Definition: datetime.c:89
static const int szdeltatktbl
Definition: datetime.c:235
static bool CheckDateTokenTable(const char *tablename, const datetkn *base, int nel)
Definition: datetime.c:4403
static const datetkn deltatktbl[]
Definition: datetime.c:170
int date2j(int y, int m, int d)
Definition: datetime.c:269
#define Assert(condition)
Definition: c.h:738
static const int szdatetktbl
Definition: datetime.c:164
#define UNIX_EPOCH_JDATE
Definition: timestamp.h:162
#define POSTGRES_EPOCH_JDATE
Definition: timestamp.h:163

◆ date2j()

int date2j ( int  ,
int  ,
int   
)

Definition at line 269 of file datetime.c.

Referenced by CheckDateTokenTables(), date2isoweek(), date2isoyear(), date2isoyearday(), date_in(), DCH_to_char(), DecodeDateTime(), DecodeNumber(), DetermineTimeZoneOffsetInternal(), EncodeDateTime(), GetSQLCurrentDate(), isoweek2j(), make_date(), make_timestamp_internal(), parse_datetime(), PGTYPESdate_dayofweek(), PGTYPESdate_defmt_asc(), PGTYPESdate_fmt_asc(), PGTYPESdate_from_asc(), PGTYPESdate_julmdy(), PGTYPESdate_mdyjul(), PGTYPESdate_to_asc(), PGTYPESdate_today(), timestamp2tm(), timestamp_date(), timestamp_part(), timestamp_pl_interval(), timestamp_to_char(), timestamptz_date(), timestamptz_part(), timestamptz_pl_interval(), timestamptz_to_char(), tm2timestamp(), to_date(), and ValidateDate().

270 {
271  int julian;
272  int century;
273 
274  if (m > 2)
275  {
276  m += 1;
277  y += 4800;
278  }
279  else
280  {
281  m += 13;
282  y += 4799;
283  }
284 
285  century = y / 100;
286  julian = y * 365 - 32167;
287  julian += y / 4 - century + century / 4;
288  julian += 7834 * m / 256 + d;
289 
290  return julian;
291 } /* date2j() */

◆ DecodeDateTime()

int DecodeDateTime ( char **  ,
int *  ,
int  ,
int *  ,
struct tm ,
fsec_t ,
bool   
)

Definition at line 1780 of file dt_common.c.

References ADBC, AM, AMPM, BC, date2j(), DAY, day_tab, DecodeDate(), DecodeNumber(), DecodeNumberField(), DecodePosixTimezone(), DecodeSpecial(), DecodeTime(), DecodeTimezone(), DOW, dt2time(), DTK_DATE, DTK_DATE_M, DTK_DAY, DTK_HOUR, DTK_JULIAN, DTK_M, DTK_MINUTE, DTK_MONTH, DTK_NOW, DTK_NUMBER, DTK_SECOND, DTK_SPECIAL, DTK_STRING, DTK_TIME, DTK_TIME_M, DTK_TODAY, DTK_TOMORROW, DTK_TZ, DTK_YEAR, DTK_YESTERDAY, DTK_ZULU, DTZ, DTZMOD, GetCurrentDateTime(), HOUR, HR24, i, IGNORE_DTF, isleap, ISOTIME, j2date(), MINUTE, MONTH, PM, RESERV, SECOND, strtoint(), generate_unaccent_rules::type, TZ, UNITS, USECS_PER_DAY, val, and YEAR.

1782 {
1783  int fmask = 0,
1784  tmask,
1785  type;
1786  int ptype = 0; /* "prefix type" for ISO y2001m02d04 format */
1787  int i;
1788  int val;
1789  int mer = HR24;
1790  bool haveTextMonth = false;
1791  bool is2digits = false;
1792  bool bc = false;
1793  int t = 0;
1794  int *tzp = &t;
1795 
1796  /***
1797  * We'll insist on at least all of the date fields, but initialize the
1798  * remaining fields in case they are not set later...
1799  ***/
1800  *dtype = DTK_DATE;
1801  tm->tm_hour = 0;
1802  tm->tm_min = 0;
1803  tm->tm_sec = 0;
1804  *fsec = 0;
1805  /* don't know daylight savings time status apriori */
1806  tm->tm_isdst = -1;
1807  if (tzp != NULL)
1808  *tzp = 0;
1809 
1810  for (i = 0; i < nf; i++)
1811  {
1812  switch (ftype[i])
1813  {
1814  case DTK_DATE:
1815  /***
1816  * Integral julian day with attached time zone?
1817  * All other forms with JD will be separated into
1818  * distinct fields, so we handle just this case here.
1819  ***/
1820  if (ptype == DTK_JULIAN)
1821  {
1822  char *cp;
1823  int val;
1824 
1825  if (tzp == NULL)
1826  return -1;
1827 
1828  val = strtoint(field[i], &cp, 10);
1829  if (*cp != '-')
1830  return -1;
1831 
1832  j2date(val, &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
1833  /* Get the time zone from the end of the string */
1834  if (DecodeTimezone(cp, tzp) != 0)
1835  return -1;
1836 
1837  tmask = DTK_DATE_M | DTK_TIME_M | DTK_M(TZ);
1838  ptype = 0;
1839  break;
1840  }
1841  /***
1842  * Already have a date? Then this might be a POSIX time
1843  * zone with an embedded dash (e.g. "PST-3" == "EST") or
1844  * a run-together time with trailing time zone (e.g. hhmmss-zz).
1845  * - thomas 2001-12-25
1846  ***/
1847  else if (((fmask & DTK_DATE_M) == DTK_DATE_M)
1848  || (ptype != 0))
1849  {
1850  /* No time zone accepted? Then quit... */
1851  if (tzp == NULL)
1852  return -1;
1853 
1854  if (isdigit((unsigned char) *field[i]) || ptype != 0)
1855  {
1856  char *cp;
1857 
1858  if (ptype != 0)
1859  {
1860  /* Sanity check; should not fail this test */
1861  if (ptype != DTK_TIME)
1862  return -1;
1863  ptype = 0;
1864  }
1865 
1866  /*
1867  * Starts with a digit but we already have a time
1868  * field? Then we are in trouble with a date and time
1869  * already...
1870  */
1871  if ((fmask & DTK_TIME_M) == DTK_TIME_M)
1872  return -1;
1873 
1874  if ((cp = strchr(field[i], '-')) == NULL)
1875  return -1;
1876 
1877  /* Get the time zone from the end of the string */
1878  if (DecodeTimezone(cp, tzp) != 0)
1879  return -1;
1880  *cp = '\0';
1881 
1882  /*
1883  * Then read the rest of the field as a concatenated
1884  * time
1885  */
1886  if ((ftype[i] = DecodeNumberField(strlen(field[i]), field[i], fmask,
1887  &tmask, tm, fsec, &is2digits)) < 0)
1888  return -1;
1889 
1890  /*
1891  * modify tmask after returning from
1892  * DecodeNumberField()
1893  */
1894  tmask |= DTK_M(TZ);
1895  }
1896  else
1897  {
1898  if (DecodePosixTimezone(field[i], tzp) != 0)
1899  return -1;
1900 
1901  ftype[i] = DTK_TZ;
1902  tmask = DTK_M(TZ);
1903  }
1904  }
1905  else if (DecodeDate(field[i], fmask, &tmask, tm, EuroDates) != 0)
1906  return -1;
1907  break;
1908 
1909  case DTK_TIME:
1910  if (DecodeTime(field[i], &tmask, tm, fsec) != 0)
1911  return -1;
1912 
1913  /*
1914  * Check upper limit on hours; other limits checked in
1915  * DecodeTime()
1916  */
1917  /* test for > 24:00:00 */
1918  if (tm->tm_hour > 24 ||
1919  (tm->tm_hour == 24 && (tm->tm_min > 0 || tm->tm_sec > 0)))
1920  return -1;
1921  break;
1922 
1923  case DTK_TZ:
1924  {
1925  int tz;
1926 
1927  if (tzp == NULL)
1928  return -1;
1929 
1930  if (DecodeTimezone(field[i], &tz) != 0)
1931  return -1;
1932 
1933  /*
1934  * Already have a time zone? Then maybe this is the second
1935  * field of a POSIX time: EST+3 (equivalent to PST)
1936  */
1937  if (i > 0 && (fmask & DTK_M(TZ)) != 0 &&
1938  ftype[i - 1] == DTK_TZ &&
1939  isalpha((unsigned char) *field[i - 1]))
1940  {
1941  *tzp -= tz;
1942  tmask = 0;
1943  }
1944  else
1945  {
1946  *tzp = tz;
1947  tmask = DTK_M(TZ);
1948  }
1949  }
1950  break;
1951 
1952  case DTK_NUMBER:
1953 
1954  /*
1955  * Was this an "ISO date" with embedded field labels? An
1956  * example is "y2001m02d04" - thomas 2001-02-04
1957  */
1958  if (ptype != 0)
1959  {
1960  char *cp;
1961  int val;
1962 
1963  val = strtoint(field[i], &cp, 10);
1964 
1965  /*
1966  * only a few kinds are allowed to have an embedded
1967  * decimal
1968  */
1969  if (*cp == '.')
1970  switch (ptype)
1971  {
1972  case DTK_JULIAN:
1973  case DTK_TIME:
1974  case DTK_SECOND:
1975  break;
1976  default:
1977  return 1;
1978  break;
1979  }
1980  else if (*cp != '\0')
1981  return -1;
1982 
1983  switch (ptype)
1984  {
1985  case DTK_YEAR:
1986  tm->tm_year = val;
1987  tmask = DTK_M(YEAR);
1988  break;
1989 
1990  case DTK_MONTH:
1991 
1992  /*
1993  * already have a month and hour? then assume
1994  * minutes
1995  */
1996  if ((fmask & DTK_M(MONTH)) != 0 &&
1997  (fmask & DTK_M(HOUR)) != 0)
1998  {
1999  tm->tm_min = val;
2000  tmask = DTK_M(MINUTE);
2001  }
2002  else
2003  {
2004  tm->tm_mon = val;
2005  tmask = DTK_M(MONTH);
2006  }
2007  break;
2008 
2009  case DTK_DAY:
2010  tm->tm_mday = val;
2011  tmask = DTK_M(DAY);
2012  break;
2013 
2014  case DTK_HOUR:
2015  tm->tm_hour = val;
2016  tmask = DTK_M(HOUR);
2017  break;
2018 
2019  case DTK_MINUTE:
2020  tm->tm_min = val;
2021  tmask = DTK_M(MINUTE);
2022  break;
2023 
2024  case DTK_SECOND:
2025  tm->tm_sec = val;
2026  tmask = DTK_M(SECOND);
2027  if (*cp == '.')
2028  {
2029  double frac;
2030 
2031  frac = strtod(cp, &cp);
2032  if (*cp != '\0')
2033  return -1;
2034  *fsec = frac * 1000000;
2035  }
2036  break;
2037 
2038  case DTK_TZ:
2039  tmask = DTK_M(TZ);
2040  if (DecodeTimezone(field[i], tzp) != 0)
2041  return -1;
2042  break;
2043 
2044  case DTK_JULIAN:
2045  /***
2046  * previous field was a label for "julian date"?
2047  ***/
2048  tmask = DTK_DATE_M;
2049  j2date(val, &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
2050  /* fractional Julian Day? */
2051  if (*cp == '.')
2052  {
2053  double time;
2054 
2055  time = strtod(cp, &cp);
2056  if (*cp != '\0')
2057  return -1;
2058 
2059  tmask |= DTK_TIME_M;
2060  dt2time((time * USECS_PER_DAY), &tm->tm_hour, &tm->tm_min, &tm->tm_sec, fsec);
2061  }
2062  break;
2063 
2064  case DTK_TIME:
2065  /* previous field was "t" for ISO time */
2066  if ((ftype[i] = DecodeNumberField(strlen(field[i]), field[i], (fmask | DTK_DATE_M),
2067  &tmask, tm, fsec, &is2digits)) < 0)
2068  return -1;
2069 
2070  if (tmask != DTK_TIME_M)
2071  return -1;
2072  break;
2073 
2074  default:
2075  return -1;
2076  break;
2077  }
2078 
2079  ptype = 0;
2080  *dtype = DTK_DATE;
2081  }
2082  else
2083  {
2084  char *cp;
2085  int flen;
2086 
2087  flen = strlen(field[i]);
2088  cp = strchr(field[i], '.');
2089 
2090  /* Embedded decimal and no date yet? */
2091  if (cp != NULL && !(fmask & DTK_DATE_M))
2092  {
2093  if (DecodeDate(field[i], fmask, &tmask, tm, EuroDates) != 0)
2094  return -1;
2095  }
2096  /* embedded decimal and several digits before? */
2097  else if (cp != NULL && flen - strlen(cp) > 2)
2098  {
2099  /*
2100  * Interpret as a concatenated date or time Set the
2101  * type field to allow decoding other fields later.
2102  * Example: 20011223 or 040506
2103  */
2104  if ((ftype[i] = DecodeNumberField(flen, field[i], fmask,
2105  &tmask, tm, fsec, &is2digits)) < 0)
2106  return -1;
2107  }
2108  else if (flen > 4)
2109  {
2110  if ((ftype[i] = DecodeNumberField(flen, field[i], fmask,
2111  &tmask, tm, fsec, &is2digits)) < 0)
2112  return -1;
2113  }
2114  /* otherwise it is a single date/time field... */
2115  else if (DecodeNumber(flen, field[i], fmask,
2116  &tmask, tm, fsec, &is2digits, EuroDates) != 0)
2117  return -1;
2118  }
2119  break;
2120 
2121  case DTK_STRING:
2122  case DTK_SPECIAL:
2123  type = DecodeSpecial(i, field[i], &val);
2124  if (type == IGNORE_DTF)
2125  continue;
2126 
2127  tmask = DTK_M(type);
2128  switch (type)
2129  {
2130  case RESERV:
2131  switch (val)
2132  {
2133  case DTK_NOW:
2134  tmask = (DTK_DATE_M | DTK_TIME_M | DTK_M(TZ));
2135  *dtype = DTK_DATE;
2137  break;
2138 
2139  case DTK_YESTERDAY:
2140  tmask = DTK_DATE_M;
2141  *dtype = DTK_DATE;
2143  j2date(date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - 1,
2144  &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
2145  tm->tm_hour = 0;
2146  tm->tm_min = 0;
2147  tm->tm_sec = 0;
2148  break;
2149 
2150  case DTK_TODAY:
2151  tmask = DTK_DATE_M;
2152  *dtype = DTK_DATE;
2154  tm->tm_hour = 0;
2155  tm->tm_min = 0;
2156  tm->tm_sec = 0;
2157  break;
2158 
2159  case DTK_TOMORROW:
2160  tmask = DTK_DATE_M;
2161  *dtype = DTK_DATE;
2163  j2date(date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) + 1,
2164  &tm->tm_year, &tm->tm_mon, &tm->tm_mday);
2165  tm->tm_hour = 0;
2166  tm->tm_min = 0;
2167  tm->tm_sec = 0;
2168  break;
2169 
2170  case DTK_ZULU:
2171  tmask = (DTK_TIME_M | DTK_M(TZ));
2172  *dtype = DTK_DATE;
2173  tm->tm_hour = 0;
2174  tm->tm_min = 0;
2175  tm->tm_sec = 0;
2176  if (tzp != NULL)
2177  *tzp = 0;
2178  break;
2179 
2180  default:
2181  *dtype = val;
2182  }
2183 
2184  break;
2185 
2186  case MONTH:
2187 
2188  /*
2189  * already have a (numeric) month? then see if we can
2190  * substitute...
2191  */
2192  if ((fmask & DTK_M(MONTH)) && !haveTextMonth &&
2193  !(fmask & DTK_M(DAY)) && tm->tm_mon >= 1 && tm->tm_mon <= 31)
2194  {
2195  tm->tm_mday = tm->tm_mon;
2196  tmask = DTK_M(DAY);
2197  }
2198  haveTextMonth = true;
2199  tm->tm_mon = val;
2200  break;
2201 
2202  case DTZMOD:
2203 
2204  /*
2205  * daylight savings time modifier (solves "MET DST"
2206  * syntax)
2207  */
2208  tmask |= DTK_M(DTZ);
2209  tm->tm_isdst = 1;
2210  if (tzp == NULL)
2211  return -1;
2212  *tzp -= val;
2213  break;
2214 
2215  case DTZ:
2216 
2217  /*
2218  * set mask for TZ here _or_ check for DTZ later when
2219  * getting default timezone
2220  */
2221  tmask |= DTK_M(TZ);
2222  tm->tm_isdst = 1;
2223  if (tzp == NULL)
2224  return -1;
2225  *tzp = -val;
2226  ftype[i] = DTK_TZ;
2227  break;
2228 
2229  case TZ:
2230  tm->tm_isdst = 0;
2231  if (tzp == NULL)
2232  return -1;
2233  *tzp = -val;
2234  ftype[i] = DTK_TZ;
2235  break;
2236 
2237  case IGNORE_DTF:
2238  break;
2239 
2240  case AMPM:
2241  mer = val;
2242  break;
2243 
2244  case ADBC:
2245  bc = (val == BC);
2246  break;
2247 
2248  case DOW:
2249  tm->tm_wday = val;
2250  break;
2251 
2252  case UNITS:
2253  tmask = 0;
2254  ptype = val;
2255  break;
2256 
2257  case ISOTIME:
2258 
2259  /*
2260  * This is a filler field "t" indicating that the next
2261  * field is time. Try to verify that this is sensible.
2262  */
2263  tmask = 0;
2264 
2265  /* No preceding date? Then quit... */
2266  if ((fmask & DTK_DATE_M) != DTK_DATE_M)
2267  return -1;
2268 
2269  /***
2270  * We will need one of the following fields:
2271  * DTK_NUMBER should be hhmmss.fff
2272  * DTK_TIME should be hh:mm:ss.fff
2273  * DTK_DATE should be hhmmss-zz
2274  ***/
2275  if (i >= nf - 1 ||
2276  (ftype[i + 1] != DTK_NUMBER &&
2277  ftype[i + 1] != DTK_TIME &&
2278  ftype[i + 1] != DTK_DATE))
2279  return -1;
2280 
2281  ptype = val;
2282  break;
2283 
2284  default:
2285  return -1;
2286  }
2287  break;
2288 
2289  default:
2290  return -1;
2291  }
2292 
2293  if (tmask & fmask)
2294  return -1;
2295  fmask |= tmask;
2296  }
2297 
2298  /* there is no year zero in AD/BC notation; i.e. "1 BC" == year 0 */
2299  if (bc)
2300  {
2301  if (tm->tm_year > 0)
2302  tm->tm_year = -(tm->tm_year - 1);
2303  else
2304  return -1;
2305  }
2306  else if (is2digits)
2307  {
2308  if (tm->tm_year < 70)
2309  tm->tm_year += 2000;
2310  else if (tm->tm_year < 100)
2311  tm->tm_year += 1900;
2312  }
2313 
2314  if (mer != HR24 && tm->tm_hour > 12)
2315  return -1;
2316  if (mer == AM && tm->tm_hour == 12)
2317  tm->tm_hour = 0;
2318  else if (mer == PM && tm->tm_hour != 12)
2319  tm->tm_hour += 12;
2320 
2321  /* do additional checking for full date specs... */
2322  if (*dtype == DTK_DATE)
2323  {
2324  if ((fmask & DTK_DATE_M) != DTK_DATE_M)
2325  return ((fmask & DTK_TIME_M) == DTK_TIME_M) ? 1 : -1;
2326 
2327  /*
2328  * check for valid day of month, now that we know for sure the month
2329  * and year...
2330  */
2331  if (tm->tm_mday < 1 || tm->tm_mday > day_tab[isleap(tm->tm_year)][tm->tm_mon - 1])
2332  return -1;
2333 
2334  /*
2335  * backend tried to find local timezone here but we don't use the
2336  * result afterwards anyway so we only check for this error: daylight
2337  * savings time modifier but no standard timezone?
2338  */
2339  if ((fmask & DTK_DATE_M) == DTK_DATE_M && tzp != NULL && !(fmask & DTK_M(TZ)) && (fmask & DTK_M(DTZMOD)))
2340  return -1;
2341  }
2342 
2343  return 0;
2344 } /* DecodeDateTime() */
static int DecodeNumberField(int len, char *str, int fmask, int *tmask, struct tm *tm, fsec_t *fsec, bool *is2digits)
Definition: dt_common.c:1086
#define PM
Definition: datetime.h:73
#define DAY
Definition: datetime.h:94
#define UNITS
Definition: datetime.h:108
#define IGNORE_DTF
Definition: datetime.h:99
int tm_wday
Definition: pgtime.h:33
#define DTK_JULIAN
Definition: datetime.h:174
#define DTK_YEAR
Definition: datetime.h:168
int tm_isdst
Definition: pgtime.h:35
#define YEAR
Definition: datetime.h:93
int tm_hour
Definition: pgtime.h:29
#define isleap(y)
Definition: datetime.h:271
void GetCurrentDateTime(struct tm *tm)
Definition: dt_common.c:1057
#define DTK_TIME_M
Definition: datetime.h:193
#define TZ
Definition: datetime.h:96
#define SECOND
Definition: datetime.h:103
#define DTK_TODAY
Definition: datetime.h:156
#define DTK_TOMORROW
Definition: datetime.h:157
#define ADBC
Definition: datetime.h:109
static int DecodeTimezone(char *str, int *tzp)
Definition: dt_common.c:1499
int date2j(int y, int m, int d)
Definition: dt_common.c:581
#define DTK_DATE_M
Definition: datetime.h:192
static struct pg_tm tm
Definition: localtime.c:108
void j2date(int jd, int *year, int *month, int *day)
Definition: dt_common.c:606
#define DTK_MONTH
Definition: datetime.h:166
#define DTK_TZ
Definition: datetime.h:147
#define DTK_HOUR
Definition: datetime.h:163
#define DOW
Definition: datetime.h:107
#define AM
Definition: datetime.h:72
#define DTK_SECOND
Definition: datetime.h:161
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
int strtoint(const char *pg_restrict str, char **pg_restrict endptr, int base)
Definition: string.c:50
#define DTK_YESTERDAY
Definition: datetime.h:155
#define DTK_NUMBER
Definition: datetime.h:142
#define MINUTE
Definition: datetime.h:102
#define USECS_PER_DAY
Definition: timestamp.h:91
#define MONTH
Definition: datetime.h:92
#define DTK_MINUTE
Definition: datetime.h:162
#define BC
Definition: datetime.h:77
const int day_tab[2][13]
Definition: dt_common.c:14
#define ISOTIME
Definition: datetime.h:116
#define DTK_TIME
Definition: datetime.h:146
static int DecodeSpecial(int field, char *lowtoken, int *val)
Definition: dt_common.c:635
#define AMPM
Definition: datetime.h:100
#define DTK_STRING
Definition: datetime.h:143
#define DTK_DAY
Definition: datetime.h:164
int DecodeTime(char *str, int *tmask, struct tm *tm, fsec_t *fsec)
Definition: dt_common.c:1434
#define RESERV
Definition: datetime.h:91
#define DTZ
Definition: datetime.h:97
static int DecodeNumber(int flen, char *str, int fmask, int *tmask, struct tm *tm, fsec_t *fsec, bool *is2digits, bool EuroDates)
Definition: dt_common.c:1196
int tm_year
Definition: pgtime.h:32
#define DTK_NOW
Definition: datetime.h:154
static int DecodePosixTimezone(char *str, int *tzp)
Definition: dt_common.c:1544
int i
#define DTK_M(t)
Definition: datetime.h:188
#define HOUR
Definition: datetime.h:101
void dt2time(double jd, int *hour, int *min, int *sec, fsec_t *fsec)
Definition: dt_common.c:1065
#define DTK_ZULU
Definition: datetime.h:158
int tm_sec
Definition: pgtime.h:27
#define DTZMOD
Definition: datetime.h:123
static int DecodeDate(char *str, int fmask, int *tmask, struct tm *tm, bool EuroDates)
Definition: dt_common.c:1305
int tm_min
Definition: pgtime.h:28
long val
Definition: informix.c:664
#define DTK_DATE
Definition: datetime.h:145
#define HR24
Definition: datetime.h:74
#define DTK_SPECIAL
Definition: datetime.h:150

◆ DecodeInterval()

int DecodeInterval ( char **  ,
int *  ,
int  ,
int *  ,
struct tm ,
fsec_t  
)

Definition at line 326 of file interval.c.

References AdjustFractDays(), AdjustFractSeconds(), AGO, Assert, ClearPgTm(), DAY, DAYS_PER_MONTH, DecodeTime(), DecodeUnits(), DTERR_BAD_FORMAT, DTERR_FIELD_OVERFLOW, DTK_ALL_SECS_M, DTK_CENTURY, DTK_DATE, DTK_DATE_M, DTK_DAY, DTK_DECADE, DTK_DELTA, DTK_HOUR, DTK_M, DTK_MICROSEC, DTK_MILLENNIUM, DTK_MILLISEC, DTK_MINUTE, DTK_MONTH, DTK_NUMBER, DTK_SECOND, DTK_SPECIAL, DTK_STRING, DTK_TIME, DTK_TIME_M, DTK_TZ, DTK_WEEK, DTK_YEAR, HOUR, i, IGNORE_DTF, INTERVAL_FULL_RANGE, INTERVAL_MASK, IntervalStyle, INTSTYLE_POSTGRES_VERBOSE, INTSTYLE_SQL_STANDARD, MICROSECOND, MILLISECOND, MINUTE, MONTH, MONTHS_PER_YEAR, range(), RESERV, SECOND, SECS_PER_DAY, SECS_PER_HOUR, SECS_PER_MINUTE, strtoint(), generate_unaccent_rules::type, TZ, UNITS, USECS_PER_SEC, val, and YEAR.

Referenced by PGTYPESinterval_from_asc().

328 {
331  bool is_before = false;
332  char *cp;
333  int fmask = 0,
334  tmask,
335  type;
336  int i;
337  int dterr;
338  int val;
339  double fval;
340 
341  *dtype = DTK_DELTA;
342  type = IGNORE_DTF;
343  ClearPgTm(tm, fsec);
344 
345  /* read through list backwards to pick up units before values */
346  for (i = nf - 1; i >= 0; i--)
347  {
348  switch (ftype[i])
349  {
350  case DTK_TIME:
351  dterr = DecodeTime(field[i], /* range, */
352  &tmask, tm, fsec);
353  if (dterr)
354  return dterr;
355  type = DTK_DAY;
356  break;
357 
358  case DTK_TZ:
359 
360  /*
361  * Timezone is a token with a leading sign character and at
362  * least one digit; there could be ':', '.', '-' embedded in
363  * it as well.
364  */
365  Assert(*field[i] == '-' || *field[i] == '+');
366 
367  /*
368  * Try for hh:mm or hh:mm:ss. If not, fall through to
369  * DTK_NUMBER case, which can handle signed float numbers and
370  * signed year-month values.
371  */
372  if (strchr(field[i] + 1, ':') != NULL &&
373  DecodeTime(field[i] + 1, /* INTERVAL_FULL_RANGE, */
374  &tmask, tm, fsec) == 0)
375  {
376  if (*field[i] == '-')
377  {
378  /* flip the sign on all fields */
379  tm->tm_hour = -tm->tm_hour;
380  tm->tm_min = -tm->tm_min;
381  tm->tm_sec = -tm->tm_sec;
382  *fsec = -(*fsec);
383  }
384 
385  /*
386  * Set the next type to be a day, if units are not
387  * specified. This handles the case of '1 +02:03' since we
388  * are reading right to left.
389  */
390  type = DTK_DAY;
391  tmask = DTK_M(TZ);
392  break;
393  }
394  /* FALL THROUGH */
395 
396  case DTK_DATE:
397  case DTK_NUMBER:
398  if (type == IGNORE_DTF)
399  {
400  /* use typmod to decide what rightmost field is */
401  switch (range)
402  {
403  case INTERVAL_MASK(YEAR):
404  type = DTK_YEAR;
405  break;
406  case INTERVAL_MASK(MONTH):
408  type = DTK_MONTH;
409  break;
410  case INTERVAL_MASK(DAY):
411  type = DTK_DAY;
412  break;
413  case INTERVAL_MASK(HOUR):
417  type = DTK_HOUR;
418  break;
419  case INTERVAL_MASK(MINUTE):
421  type = DTK_MINUTE;
422  break;
423  case INTERVAL_MASK(SECOND):
426  type = DTK_SECOND;
427  break;
428  default:
429  type = DTK_SECOND;
430  break;
431  }
432  }
433 
434  errno = 0;
435  val = strtoint(field[i], &cp, 10);
436  if (errno == ERANGE)
437  return DTERR_FIELD_OVERFLOW;
438 
439  if (*cp == '-')
440  {
441  /* SQL "years-months" syntax */
442  int val2;
443 
444  val2 = strtoint(cp + 1, &cp, 10);
445  if (errno == ERANGE || val2 < 0 || val2 >= MONTHS_PER_YEAR)
446  return DTERR_FIELD_OVERFLOW;
447  if (*cp != '\0')
448  return DTERR_BAD_FORMAT;
449  type = DTK_MONTH;
450  if (*field[i] == '-')
451  val2 = -val2;
452  val = val * MONTHS_PER_YEAR + val2;
453  fval = 0;
454  }
455  else if (*cp == '.')
456  {
457  errno = 0;
458  fval = strtod(cp, &cp);
459  if (*cp != '\0' || errno != 0)
460  return DTERR_BAD_FORMAT;
461 
462  if (*field[i] == '-')
463  fval = -fval;
464  }
465  else if (*cp == '\0')
466  fval = 0;
467  else
468  return DTERR_BAD_FORMAT;
469 
470  tmask = 0; /* DTK_M(type); */
471 
472  switch (type)
473  {
474  case DTK_MICROSEC:
475  *fsec += rint(val + fval);
476  tmask = DTK_M(MICROSECOND);
477  break;
478 
479  case DTK_MILLISEC:
480  *fsec += rint((val + fval) * 1000);
481  tmask = DTK_M(MILLISECOND);
482  break;
483 
484  case DTK_SECOND:
485  tm->tm_sec += val;
486  *fsec += rint(fval * 1000000);
487 
488  /*
489  * If any subseconds were specified, consider this
490  * microsecond and millisecond input as well.
491  */
492  if (fval == 0)
493  tmask = DTK_M(SECOND);
494  else
495  tmask = DTK_ALL_SECS_M;
496  break;
497 
498  case DTK_MINUTE:
499  tm->tm_min += val;
500  AdjustFractSeconds(fval, tm, fsec, SECS_PER_MINUTE);
501  tmask = DTK_M(MINUTE);
502  break;
503 
504  case DTK_HOUR:
505  tm->tm_hour += val;
506  AdjustFractSeconds(fval, tm, fsec, SECS_PER_HOUR);
507  tmask = DTK_M(HOUR);
508  type = DTK_DAY;
509  break;
510 
511  case DTK_DAY:
512  tm->tm_mday += val;
513  AdjustFractSeconds(fval, tm, fsec, SECS_PER_DAY);
514  tmask = (fmask & DTK_M(DAY)) ? 0 : DTK_M(DAY);
515  break;
516 
517  case DTK_WEEK:
518  tm->tm_mday += val * 7;
519  AdjustFractDays(fval, tm, fsec, 7);
520  tmask = (fmask & DTK_M(DAY)) ? 0 : DTK_M(DAY);
521  break;
522 
523  case DTK_MONTH:
524  tm->tm_mon += val;
525  AdjustFractDays(fval, tm, fsec, DAYS_PER_MONTH);
526  tmask = DTK_M(MONTH);
527  break;
528 
529  case DTK_YEAR:
530  tm->tm_year += val;
531  if (fval != 0)
532  tm->tm_mon += fval * MONTHS_PER_YEAR;
533  tmask = (fmask & DTK_M(YEAR)) ? 0 : DTK_M(YEAR);
534  break;
535 
536  case DTK_DECADE:
537  tm->tm_year += val * 10;
538  if (fval != 0)
539  tm->tm_mon += fval * MONTHS_PER_YEAR * 10;
540  tmask = (fmask & DTK_M(YEAR)) ? 0 : DTK_M(YEAR);
541  break;
542 
543  case DTK_CENTURY:
544  tm->tm_year += val * 100;
545  if (fval != 0)
546  tm->tm_mon += fval * MONTHS_PER_YEAR * 100;
547  tmask = (fmask & DTK_M(YEAR)) ? 0 : DTK_M(YEAR);
548  break;
549 
550  case DTK_MILLENNIUM:
551  tm->tm_year += val * 1000;
552  if (fval != 0)
553  tm->tm_mon += fval * MONTHS_PER_YEAR * 1000;
554  tmask = (fmask & DTK_M(YEAR)) ? 0 : DTK_M(YEAR);
555  break;
556 
557  default:
558  return DTERR_BAD_FORMAT;
559  }
560  break;
561 
562  case DTK_STRING:
563  case DTK_SPECIAL:
564  type = DecodeUnits(i, field[i], &val);
565  if (type == IGNORE_DTF)
566  continue;
567 
568  tmask = 0; /* DTK_M(type); */
569  switch (type)
570  {
571  case UNITS:
572  type = val;
573  break;
574 
575  case AGO:
576  is_before = true;
577  type = val;
578  break;
579 
580  case RESERV:
581  tmask = (DTK_DATE_M | DTK_TIME_M);
582  *dtype = val;
583  break;
584 
585  default:
586  return DTERR_BAD_FORMAT;
587  }
588  break;
589 
590  default:
591  return DTERR_BAD_FORMAT;
592  }
593 
594  if (tmask & fmask)
595  return DTERR_BAD_FORMAT;
596  fmask |= tmask;
597  }
598 
599  /* ensure that at least one time field has been found */
600  if (fmask == 0)
601  return DTERR_BAD_FORMAT;
602 
603  /* ensure fractional seconds are fractional */
604  if (*fsec != 0)
605  {
606  int sec;
607 
608  sec = *fsec / USECS_PER_SEC;
609  *fsec -= sec * USECS_PER_SEC;
610  tm->tm_sec += sec;
611  }
612 
613  /*----------
614  * The SQL standard defines the interval literal
615  * '-1 1:00:00'
616  * to mean "negative 1 days and negative 1 hours", while Postgres
617  * traditionally treats this as meaning "negative 1 days and positive
618  * 1 hours". In SQL_STANDARD intervalstyle, we apply the leading sign
619  * to all fields if there are no other explicit signs.
620  *
621  * We leave the signs alone if there are additional explicit signs.
622  * This protects us against misinterpreting postgres-style dump output,
623  * since the postgres-style output code has always put an explicit sign on
624  * all fields following a negative field. But note that SQL-spec output
625  * is ambiguous and can be misinterpreted on load! (So it's best practice
626  * to dump in postgres style, not SQL style.)
627  *----------
628  */
629  if (IntervalStyle == INTSTYLE_SQL_STANDARD && *field[0] == '-')
630  {
631  /* Check for additional explicit signs */
632  bool more_signs = false;
633 
634  for (i = 1; i < nf; i++)
635  {
636  if (*field[i] == '-' || *field[i] == '+')
637  {
638  more_signs = true;
639  break;
640  }
641  }
642 
643  if (!more_signs)
644  {
645  /*
646  * Rather than re-determining which field was field[0], just force
647  * 'em all negative.
648  */
649  if (*fsec > 0)
650  *fsec = -(*fsec);
651  if (tm->tm_sec > 0)
652  tm->tm_sec = -tm->tm_sec;
653  if (tm->tm_min > 0)
654  tm->tm_min = -tm->tm_min;
655  if (tm->tm_hour > 0)
656  tm->tm_hour = -tm->tm_hour;
657  if (tm->tm_mday > 0)
658  tm->tm_mday = -tm->tm_mday;
659  if (tm->tm_mon > 0)
660  tm->tm_mon = -tm->tm_mon;
661  if (tm->tm_year > 0)
662  tm->tm_year = -tm->tm_year;
663  }
664  }
665 
666  /* finally, AGO negates everything */
667  if (is_before)
668  {
669  *fsec = -(*fsec);
670  tm->tm_sec = -tm->tm_sec;
671  tm->tm_min = -tm->tm_min;
672  tm->tm_hour = -tm->tm_hour;
673  tm->tm_mday = -tm->tm_mday;
674  tm->tm_mon = -tm->tm_mon;
675  tm->tm_year = -tm->tm_year;
676  }
677 
678  return 0;
679 }
#define INTSTYLE_POSTGRES_VERBOSE
Definition: miscadmin.h:235
static void AdjustFractDays(double frac, struct tm *tm, fsec_t *fsec, int scale)
Definition: interval.c:41
#define DTERR_BAD_FORMAT
Definition: datetime.h:280
#define DTK_CENTURY
Definition: datetime.h:170
#define DAY
Definition: datetime.h:94
#define UNITS
Definition: datetime.h:108
#define IGNORE_DTF
Definition: datetime.h:99
#define DTK_WEEK
Definition: datetime.h:165
#define DTK_YEAR
Definition: datetime.h:168
#define USECS_PER_SEC
Definition: timestamp.h:94
#define YEAR
Definition: datetime.h:93
#define DTK_DELTA
Definition: datetime.h:160
int tm_hour
Definition: pgtime.h:29
#define AGO
Definition: datetime.h:111
#define DTK_TIME_M
Definition: datetime.h:193
#define DTK_MILLENNIUM
Definition: datetime.h:171
int IntervalStyle
Definition: globals.c:117
#define TZ
Definition: datetime.h:96
#define SECOND
Definition: datetime.h:103
int DecodeUnits(int field, char *lowtoken, int *val)
Definition: datetime.c:3699
#define INTERVAL_FULL_RANGE
Definition: timestamp.h:48
#define DTK_DATE_M
Definition: datetime.h:192
static struct pg_tm tm
Definition: localtime.c:108
static void ClearPgTm(struct tm *tm, fsec_t *fsec)
Definition: interval.c:94
#define DTK_MONTH
Definition: datetime.h:166
#define DTK_MILLISEC
Definition: datetime.h:172
#define MONTHS_PER_YEAR
Definition: timestamp.h:69
#define DTK_DECADE
Definition: datetime.h:169
#define DTK_TZ
Definition: datetime.h:147
#define DTK_HOUR
Definition: datetime.h:163
#define DTERR_FIELD_OVERFLOW
Definition: datetime.h:281
#define MILLISECOND
Definition: datetime.h:104
#define SECS_PER_DAY
Definition: timestamp.h:86
#define DTK_SECOND
Definition: datetime.h:161
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
#define SECS_PER_MINUTE
Definition: timestamp.h:88
int strtoint(const char *pg_restrict str, char **pg_restrict endptr, int base)
Definition: string.c:50
#define DTK_NUMBER
Definition: datetime.h:142
#define MINUTE
Definition: datetime.h:102
static struct cvec * range(struct vars *v, chr a, chr b, int cases)
Definition: regc_locale.c:416
#define SECS_PER_HOUR
Definition: timestamp.h:87
#define MONTH
Definition: datetime.h:92
#define DTK_MINUTE
Definition: datetime.h:162
#define DTK_MICROSEC
Definition: datetime.h:173
#define DAYS_PER_MONTH
Definition: timestamp.h:77
#define DTK_TIME
Definition: datetime.h:146
static int DecodeTime(char *str, int fmask, int range, int *tmask, struct pg_tm *tm, fsec_t *fsec)
Definition: datetime.c:2527
static void AdjustFractSeconds(double frac, struct tm *tm, fsec_t *fsec, int scale)
Definition: interval.c:23
#define Assert(condition)
Definition: c.h:738
#define DTK_STRING
Definition: datetime.h:143
#define DTK_DAY
Definition: datetime.h:164
#define RESERV
Definition: datetime.h:91
#define DTK_ALL_SECS_M
Definition: datetime.h:191
#define INTERVAL_MASK(b)
Definition: timestamp.h:45
#define INTSTYLE_SQL_STANDARD
Definition: miscadmin.h:236
int tm_year
Definition: pgtime.h:32
int i
#define DTK_M(t)
Definition: datetime.h:188
#define HOUR
Definition: datetime.h:101
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28
long val
Definition: informix.c:664
#define DTK_DATE
Definition: datetime.h:145
#define DTK_SPECIAL
Definition: datetime.h:150
#define MICROSECOND
Definition: datetime.h:105

◆ DecodeTime()

int DecodeTime ( char *  ,
int *  ,
struct tm ,
fsec_t  
)

Definition at line 1434 of file dt_common.c.

References DTK_TIME_M, i, strtoint(), and USECS_PER_SEC.

Referenced by DecodeDateTime().

1435 {
1436  char *cp;
1437 
1438  *tmask = DTK_TIME_M;
1439 
1440  tm->tm_hour = strtoint(str, &cp, 10);
1441  if (*cp != ':')
1442  return -1;
1443  str = cp + 1;
1444  tm->tm_min = strtoint(str, &cp, 10);
1445  if (*cp == '\0')
1446  {
1447  tm->tm_sec = 0;
1448  *fsec = 0;
1449  }
1450  else if (*cp != ':')
1451  return -1;
1452  else
1453  {
1454  str = cp + 1;
1455  tm->tm_sec = strtoint(str, &cp, 10);
1456  if (*cp == '\0')
1457  *fsec = 0;
1458  else if (*cp == '.')
1459  {
1460  char fstr[7];
1461  int i;
1462 
1463  cp++;
1464 
1465  /*
1466  * OK, we have at most six digits to care about. Let's construct a
1467  * string with those digits, zero-padded on the right, and then do
1468  * the conversion to an integer.
1469  *
1470  * XXX This truncates the seventh digit, unlike rounding it as the
1471  * backend does.
1472  */
1473  for (i = 0; i < 6; i++)
1474  fstr[i] = *cp != '\0' ? *cp++ : '0';
1475  fstr[i] = '\0';
1476  *fsec = strtoint(fstr, &cp, 10);
1477  if (*cp != '\0')
1478  return -1;
1479  }
1480  else
1481  return -1;
1482  }
1483 
1484  /* do a sanity check */
1485  if (tm->tm_hour < 0 || tm->tm_min < 0 || tm->tm_min > 59 ||
1486  tm->tm_sec < 0 || tm->tm_sec > 59 || *fsec >= USECS_PER_SEC)
1487  return -1;
1488 
1489  return 0;
1490 } /* DecodeTime() */
#define USECS_PER_SEC
Definition: timestamp.h:94
int tm_hour
Definition: pgtime.h:29
#define DTK_TIME_M
Definition: datetime.h:193
static struct pg_tm tm
Definition: localtime.c:108
int strtoint(const char *pg_restrict str, char **pg_restrict endptr, int base)
Definition: string.c:50
int i
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28

◆ DecodeUnits()

int DecodeUnits ( int  field,
char *  lowtoken,
int *  val 
)

Definition at line 3699 of file datetime.c.

References datebsearch(), szdeltatktbl, datetkn::token, TOKMAXLEN, datetkn::type, generate_unaccent_rules::type, UNKNOWN_FIELD, and datetkn::value.

Referenced by DecodeInterval(), interval_part(), interval_trunc(), time_part(), timestamp_part(), timestamp_trunc(), timestamptz_part(), timestamptz_trunc_internal(), and timetz_part().

3700 {
3701  int type;
3702  const datetkn *tp;
3703 
3704  tp = deltacache[field];
3705  /* use strncmp so that we match truncated tokens */
3706  if (tp == NULL || strncmp(lowtoken, tp->token, TOKMAXLEN) != 0)
3707  {
3708  tp = datebsearch(lowtoken, deltatktbl, szdeltatktbl);
3709  }
3710  if (tp == NULL)
3711  {
3712  type = UNKNOWN_FIELD;
3713  *val = 0;
3714  }
3715  else
3716  {
3717  deltacache[field] = tp;
3718  type = tp->type;
3719  *val = tp->value;
3720  }
3721 
3722  return type;
3723 } /* DecodeUnits() */
static const datetkn * deltacache[MAXDATEFIELDS]
Definition: datetime.c:243
#define UNKNOWN_FIELD
Definition: datetime.h:125
int32 value
Definition: datetime.h:212
static const int szdeltatktbl
Definition: datetime.c:235
char token[TOKMAXLEN+1]
Definition: datetime.h:210
static const datetkn * datebsearch(const char *key, const datetkn *base, int nel)
Definition: datetime.c:3781
static const datetkn deltatktbl[]
Definition: datetime.c:170
char type
Definition: datetime.h:211
#define TOKMAXLEN
Definition: datetime.h:205
long val
Definition: informix.c:664

◆ dt2time()

void dt2time ( double  ,
int *  ,
int *  ,
int *  ,
fsec_t  
)

Definition at line 1065 of file dt_common.c.

References USECS_PER_HOUR, USECS_PER_MINUTE, and USECS_PER_SEC.

Referenced by DecodeDateTime().

1066 {
1067  int64 time;
1068 
1069  time = jd;
1070  *hour = time / USECS_PER_HOUR;
1071  time -= (*hour) * USECS_PER_HOUR;
1072  *min = time / USECS_PER_MINUTE;
1073  time -= (*min) * USECS_PER_MINUTE;
1074  *sec = time / USECS_PER_SEC;
1075  *fsec = time - (*sec * USECS_PER_SEC);
1076 } /* dt2time() */
#define USECS_PER_SEC
Definition: timestamp.h:94
#define USECS_PER_MINUTE
Definition: timestamp.h:93
#define USECS_PER_HOUR
Definition: timestamp.h:92

◆ EncodeDateOnly()

void EncodeDateOnly ( struct tm tm,
int  style,
char *  str,
bool  EuroDates 
)

Definition at line 669 of file dt_common.c.

References Assert, MONTHS_PER_YEAR, sprintf, USE_GERMAN_DATES, USE_ISO_DATES, USE_POSTGRES_DATES, and USE_SQL_DATES.

670 {
671  Assert(tm->tm_mon >= 1 && tm->tm_mon <= MONTHS_PER_YEAR);
672 
673  switch (style)
674  {
675  case USE_ISO_DATES:
676  /* compatible with ISO date formats */
677  if (tm->tm_year > 0)
678  sprintf(str, "%04d-%02d-%02d",
679  tm->tm_year, tm->tm_mon, tm->tm_mday);
680  else
681  sprintf(str, "%04d-%02d-%02d %s",
682  -(tm->tm_year - 1), tm->tm_mon, tm->tm_mday, "BC");
683  break;
684 
685  case USE_SQL_DATES:
686  /* compatible with Oracle/Ingres date formats */
687  if (EuroDates)
688  sprintf(str, "%02d/%02d", tm->tm_mday, tm->tm_mon);
689  else
690  sprintf(str, "%02d/%02d", tm->tm_mon, tm->tm_mday);
691  if (tm->tm_year > 0)
692  sprintf(str + 5, "/%04d", tm->tm_year);
693  else
694  sprintf(str + 5, "/%04d %s", -(tm->tm_year - 1), "BC");
695  break;
696 
697  case USE_GERMAN_DATES:
698  /* German-style date format */
699  sprintf(str, "%02d.%02d", tm->tm_mday, tm->tm_mon);
700  if (tm->tm_year > 0)
701  sprintf(str + 5, ".%04d", tm->tm_year);
702  else
703  sprintf(str + 5, ".%04d %s", -(tm->tm_year - 1), "BC");
704  break;
705 
706  case USE_POSTGRES_DATES:
707  default:
708  /* traditional date-only style for Postgres */
709  if (EuroDates)
710  sprintf(str, "%02d-%02d", tm->tm_mday, tm->tm_mon);
711  else
712  sprintf(str, "%02d-%02d", tm->tm_mon, tm->tm_mday);
713  if (tm->tm_year > 0)
714  sprintf(str + 5, "-%04d", tm->tm_year);
715  else
716  sprintf(str + 5, "-%04d %s", -(tm->tm_year - 1), "BC");
717  break;
718  }
719 }
#define USE_SQL_DATES
Definition: miscadmin.h:215
#define USE_ISO_DATES
Definition: miscadmin.h:214
static struct pg_tm tm
Definition: localtime.c:108
#define MONTHS_PER_YEAR
Definition: timestamp.h:69
#define sprintf
Definition: port.h:195
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
#define USE_POSTGRES_DATES
Definition: miscadmin.h:213
#define Assert(condition)
Definition: c.h:738
int tm_year
Definition: pgtime.h:32
#define USE_GERMAN_DATES
Definition: miscadmin.h:216

◆ EncodeDateTime()

void EncodeDateTime ( struct tm tm,
fsec_t  fsec,
bool  print_tz,
int  tz,
const char *  tzn,
int  style,
char *  str,
bool  EuroDates 
)

Definition at line 753 of file dt_common.c.

References date2j(), days, MAXTZLEN, MINS_PER_HOUR, months, SECS_PER_HOUR, sprintf, TrimTrailingZeros(), USE_GERMAN_DATES, USE_ISO_DATES, USE_POSTGRES_DATES, and USE_SQL_DATES.

754 {
755  int day,
756  hour,
757  min;
758 
759  /*
760  * Negative tm_isdst means we have no valid time zone translation.
761  */
762  if (tm->tm_isdst < 0)
763  print_tz = false;
764 
765  switch (style)
766  {
767  case USE_ISO_DATES:
768  /* Compatible with ISO-8601 date formats */
769 
770  sprintf(str, "%04d-%02d-%02d %02d:%02d",
771  (tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
772  tm->tm_mon, tm->tm_mday, tm->tm_hour, tm->tm_min);
773 
774  /*
775  * Print fractional seconds if any. The field widths here should
776  * be at least equal to MAX_TIMESTAMP_PRECISION.
777  */
778  if (fsec != 0)
779  {
780  sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
782  }
783  else
784  sprintf(str + strlen(str), ":%02d", tm->tm_sec);
785 
786  if (tm->tm_year <= 0)
787  sprintf(str + strlen(str), " BC");
788 
789  if (print_tz)
790  {
791  hour = -(tz / SECS_PER_HOUR);
792  min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
793  if (min != 0)
794  sprintf(str + strlen(str), "%+03d:%02d", hour, min);
795  else
796  sprintf(str + strlen(str), "%+03d", hour);
797  }
798  break;
799 
800  case USE_SQL_DATES:
801  /* Compatible with Oracle/Ingres date formats */
802 
803  if (EuroDates)
804  sprintf(str, "%02d/%02d", tm->tm_mday, tm->tm_mon);
805  else
806  sprintf(str, "%02d/%02d", tm->tm_mon, tm->tm_mday);
807 
808  sprintf(str + 5, "/%04d %02d:%02d",
809  (tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
810  tm->tm_hour, tm->tm_min);
811 
812  /*
813  * Print fractional seconds if any. The field widths here should
814  * be at least equal to MAX_TIMESTAMP_PRECISION.
815  */
816  if (fsec != 0)
817  {
818  sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
820  }
821  else
822  sprintf(str + strlen(str), ":%02d", tm->tm_sec);
823 
824  if (tm->tm_year <= 0)
825  sprintf(str + strlen(str), " BC");
826 
827  /*
828  * Note: the uses of %.*s in this function would be risky if the
829  * timezone names ever contain non-ASCII characters. However, all
830  * TZ abbreviations in the IANA database are plain ASCII.
831  */
832 
833  if (print_tz)
834  {
835  if (tzn)
836  sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
837  else
838  {
839  hour = -(tz / SECS_PER_HOUR);
840  min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
841  if (min != 0)
842  sprintf(str + strlen(str), "%+03d:%02d", hour, min);
843  else
844  sprintf(str + strlen(str), "%+03d", hour);
845  }
846  }
847  break;
848 
849  case USE_GERMAN_DATES:
850  /* German variant on European style */
851 
852  sprintf(str, "%02d.%02d", tm->tm_mday, tm->tm_mon);
853 
854  sprintf(str + 5, ".%04d %02d:%02d",
855  (tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1),
856  tm->tm_hour, tm->tm_min);
857 
858  /*
859  * Print fractional seconds if any. The field widths here should
860  * be at least equal to MAX_TIMESTAMP_PRECISION.
861  */
862  if (fsec != 0)
863  {
864  sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
866  }
867  else
868  sprintf(str + strlen(str), ":%02d", tm->tm_sec);
869 
870  if (tm->tm_year <= 0)
871  sprintf(str + strlen(str), " BC");
872 
873  if (print_tz)
874  {
875  if (tzn)
876  sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
877  else
878  {
879  hour = -(tz / SECS_PER_HOUR);
880  min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
881  if (min != 0)
882  sprintf(str + strlen(str), "%+03d:%02d", hour, min);
883  else
884  sprintf(str + strlen(str), "%+03d", hour);
885  }
886  }
887  break;
888 
889  case USE_POSTGRES_DATES:
890  default:
891  /* Backward-compatible with traditional Postgres abstime dates */
892 
893  day = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday);
894  tm->tm_wday = (int) ((day + date2j(2000, 1, 1) + 1) % 7);
895 
896  memcpy(str, days[tm->tm_wday], 3);
897  strcpy(str + 3, " ");
898 
899  if (EuroDates)
900  sprintf(str + 4, "%02d %3s", tm->tm_mday, months[tm->tm_mon - 1]);
901  else
902  sprintf(str + 4, "%3s %02d", months[tm->tm_mon - 1], tm->tm_mday);
903 
904  sprintf(str + 10, " %02d:%02d", tm->tm_hour, tm->tm_min);
905 
906  /*
907  * Print fractional seconds if any. The field widths here should
908  * be at least equal to MAX_TIMESTAMP_PRECISION.
909  */
910  if (fsec != 0)
911  {
912  sprintf(str + strlen(str), ":%02d.%06d", tm->tm_sec, fsec);
914  }
915  else
916  sprintf(str + strlen(str), ":%02d", tm->tm_sec);
917 
918  sprintf(str + strlen(str), " %04d",
919  (tm->tm_year > 0) ? tm->tm_year : -(tm->tm_year - 1));
920  if (tm->tm_year <= 0)
921  sprintf(str + strlen(str), " BC");
922 
923  if (print_tz)
924  {
925  if (tzn)
926  sprintf(str + strlen(str), " %.*s", MAXTZLEN, tzn);
927  else
928  {
929  /*
930  * We have a time zone, but no string version. Use the
931  * numeric form, but be sure to include a leading space to
932  * avoid formatting something which would be rejected by
933  * the date/time parser later. - thomas 2001-10-19
934  */
935  hour = -(tz / SECS_PER_HOUR);
936  min = (abs(tz) / MINS_PER_HOUR) % MINS_PER_HOUR;
937  if (min != 0)
938  sprintf(str + strlen(str), " %+03d:%02d", hour, min);
939  else
940  sprintf(str + strlen(str), " %+03d", hour);
941  }
942  }
943  break;
944  }
945 }
char * days[]
Definition: dt_common.c:495
int tm_wday
Definition: pgtime.h:33
int tm_isdst
Definition: pgtime.h:35
int tm_hour
Definition: pgtime.h:29
#define USE_SQL_DATES
Definition: miscadmin.h:215
#define MAXTZLEN
Definition: miscadmin.h:241
int date2j(int y, int m, int d)
Definition: dt_common.c:581
#define MINS_PER_HOUR
Definition: timestamp.h:89
#define USE_ISO_DATES
Definition: miscadmin.h:214
static struct pg_tm tm
Definition: localtime.c:108
#define sprintf
Definition: port.h:195
char * months[]
Definition: dt_common.c:493
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
#define USE_POSTGRES_DATES
Definition: miscadmin.h:213
#define SECS_PER_HOUR
Definition: timestamp.h:87
int tm_year
Definition: pgtime.h:32
#define USE_GERMAN_DATES
Definition: miscadmin.h:216
int tm_sec
Definition: pgtime.h:27
void TrimTrailingZeros(char *str)
Definition: dt_common.c:722
int tm_min
Definition: pgtime.h:28

◆ EncodeInterval()

void EncodeInterval ( struct tm tm,
fsec_t  fsec,
int  style,
char *  str 
)

Definition at line 763 of file interval.c.

References AddISO8601IntPart(), AddPostgresIntPart(), AddVerboseIntPart(), AppendSeconds(), INTSTYLE_ISO_8601, INTSTYLE_POSTGRES, INTSTYLE_POSTGRES_VERBOSE, INTSTYLE_SQL_STANDARD, MAX_INTERVAL_PRECISION, sprintf, and generate_unaccent_rules::str.

Referenced by PGTYPESinterval_to_asc().

764 {
765  char *cp = str;
766  int year = tm->tm_year;
767  int mon = tm->tm_mon;
768  int mday = tm->tm_mday;
769  int hour = tm->tm_hour;
770  int min = tm->tm_min;
771  int sec = tm->tm_sec;
772  bool is_before = false;
773  bool is_zero = true;
774 
775  /*
776  * The sign of year and month are guaranteed to match, since they are
777  * stored internally as "month". But we'll need to check for is_before and
778  * is_zero when determining the signs of day and hour/minute/seconds
779  * fields.
780  */
781  switch (style)
782  {
783  /* SQL Standard interval format */
785  {
786  bool has_negative = year < 0 || mon < 0 ||
787  mday < 0 || hour < 0 ||
788  min < 0 || sec < 0 || fsec < 0;
789  bool has_positive = year > 0 || mon > 0 ||
790  mday > 0 || hour > 0 ||
791  min > 0 || sec > 0 || fsec > 0;
792  bool has_year_month = year != 0 || mon != 0;
793  bool has_day_time = mday != 0 || hour != 0 ||
794  min != 0 || sec != 0 || fsec != 0;
795  bool has_day = mday != 0;
796  bool sql_standard_value = !(has_negative && has_positive) &&
797  !(has_year_month && has_day_time);
798 
799  /*
800  * SQL Standard wants only 1 "<sign>" preceding the whole
801  * interval ... but can't do that if mixed signs.
802  */
803  if (has_negative && sql_standard_value)
804  {
805  *cp++ = '-';
806  year = -year;
807  mon = -mon;
808  mday = -mday;
809  hour = -hour;
810  min = -min;
811  sec = -sec;
812  fsec = -fsec;
813  }
814 
815  if (!has_negative && !has_positive)
816  {
817  sprintf(cp, "0");
818  }
819  else if (!sql_standard_value)
820  {
821  /*
822  * For non sql-standard interval values, force outputting
823  * the signs to avoid ambiguities with intervals with
824  * mixed sign components.
825  */
826  char year_sign = (year < 0 || mon < 0) ? '-' : '+';
827  char day_sign = (mday < 0) ? '-' : '+';
828  char sec_sign = (hour < 0 || min < 0 ||
829  sec < 0 || fsec < 0) ? '-' : '+';
830 
831  sprintf(cp, "%c%d-%d %c%d %c%d:%02d:",
832  year_sign, abs(year), abs(mon),
833  day_sign, abs(mday),
834  sec_sign, abs(hour), abs(min));
835  cp += strlen(cp);
836  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
837  }
838  else if (has_year_month)
839  {
840  sprintf(cp, "%d-%d", year, mon);
841  }
842  else if (has_day)
843  {
844  sprintf(cp, "%d %d:%02d:", mday, hour, min);
845  cp += strlen(cp);
846  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
847  }
848  else
849  {
850  sprintf(cp, "%d:%02d:", hour, min);
851  cp += strlen(cp);
852  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
853  }
854  }
855  break;
856 
857  /* ISO 8601 "time-intervals by duration only" */
858  case INTSTYLE_ISO_8601:
859  /* special-case zero to avoid printing nothing */
860  if (year == 0 && mon == 0 && mday == 0 &&
861  hour == 0 && min == 0 && sec == 0 && fsec == 0)
862  {
863  sprintf(cp, "PT0S");
864  break;
865  }
866  *cp++ = 'P';
867  cp = AddISO8601IntPart(cp, year, 'Y');
868  cp = AddISO8601IntPart(cp, mon, 'M');
869  cp = AddISO8601IntPart(cp, mday, 'D');
870  if (hour != 0 || min != 0 || sec != 0 || fsec != 0)
871  *cp++ = 'T';
872  cp = AddISO8601IntPart(cp, hour, 'H');
873  cp = AddISO8601IntPart(cp, min, 'M');
874  if (sec != 0 || fsec != 0)
875  {
876  if (sec < 0 || fsec < 0)
877  *cp++ = '-';
878  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, false);
879  cp += strlen(cp);
880  *cp++ = 'S';
881  *cp = '\0';
882  }
883  break;
884 
885  /* Compatible with postgresql < 8.4 when DateStyle = 'iso' */
886  case INTSTYLE_POSTGRES:
887  cp = AddPostgresIntPart(cp, year, "year", &is_zero, &is_before);
888  cp = AddPostgresIntPart(cp, mon, "mon", &is_zero, &is_before);
889  cp = AddPostgresIntPart(cp, mday, "day", &is_zero, &is_before);
890  if (is_zero || hour != 0 || min != 0 || sec != 0 || fsec != 0)
891  {
892  bool minus = (hour < 0 || min < 0 || sec < 0 || fsec < 0);
893 
894  sprintf(cp, "%s%s%02d:%02d:",
895  is_zero ? "" : " ",
896  (minus ? "-" : (is_before ? "+" : "")),
897  abs(hour), abs(min));
898  cp += strlen(cp);
899  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, true);
900  }
901  break;
902 
903  /* Compatible with postgresql < 8.4 when DateStyle != 'iso' */
905  default:
906  strcpy(cp, "@");
907  cp++;
908  cp = AddVerboseIntPart(cp, year, "year", &is_zero, &is_before);
909  cp = AddVerboseIntPart(cp, mon, "mon", &is_zero, &is_before);
910  cp = AddVerboseIntPart(cp, mday, "day", &is_zero, &is_before);
911  cp = AddVerboseIntPart(cp, hour, "hour", &is_zero, &is_before);
912  cp = AddVerboseIntPart(cp, min, "min", &is_zero, &is_before);
913  if (sec != 0 || fsec != 0)
914  {
915  *cp++ = ' ';
916  if (sec < 0 || (sec == 0 && fsec < 0))
917  {
918  if (is_zero)
919  is_before = true;
920  else if (!is_before)
921  *cp++ = '-';
922  }
923  else if (is_before)
924  *cp++ = '-';
925  AppendSeconds(cp, sec, fsec, MAX_INTERVAL_PRECISION, false);
926  cp += strlen(cp);
927  sprintf(cp, " sec%s",
928  (abs(sec) != 1 || fsec != 0) ? "s" : "");
929  is_zero = false;
930  }
931  /* identically zero? then put in a unitless zero... */
932  if (is_zero)
933  strcat(cp, " 0");
934  if (is_before)
935  strcat(cp, " ago");
936  break;
937  }
938 }
#define INTSTYLE_POSTGRES_VERBOSE
Definition: miscadmin.h:235
static void AppendSeconds(char *cp, int sec, fsec_t fsec, int precision, bool fillzeros)
Definition: interval.c:737
int tm_hour
Definition: pgtime.h:29
static struct pg_tm tm
Definition: localtime.c:108
#define sprintf
Definition: port.h:195
#define MAX_INTERVAL_PRECISION
Definition: timestamp.h:54
static char * AddISO8601IntPart(char *cp, int value, char units)
Definition: interval.c:727
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
#define INTSTYLE_ISO_8601
Definition: miscadmin.h:237
static char * AddPostgresIntPart(char *cp, int value, const char *units, bool *is_zero, bool *is_before)
Definition: interval.c:704
#define INTSTYLE_SQL_STANDARD
Definition: miscadmin.h:236
int tm_year
Definition: pgtime.h:32
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28
static char * AddVerboseIntPart(char *cp, int value, const char *units, bool *is_zero, bool *is_before)
Definition: interval.c:684
#define INTSTYLE_POSTGRES
Definition: miscadmin.h:234

◆ GetCurrentDateTime()

void GetCurrentDateTime ( struct tm )

Definition at line 1057 of file dt_common.c.

References abstime2tm().

Referenced by DecodeDateTime().

1058 {
1059  int tz;
1060 
1061  abstime2tm(time(NULL), &tz, tm, NULL);
1062 }
static struct pg_tm tm
Definition: localtime.c:108
static void abstime2tm(AbsoluteTime _time, int *tzp, struct tm *tm, char **tzn)
Definition: dt_common.c:971

◆ GetEpochTime()

int GetEpochTime ( struct tm )

Definition at line 948 of file dt_common.c.

References epoch.

949 {
950  struct tm *t0;
951  time_t epoch = 0;
952 
953  t0 = gmtime(&epoch);
954 
955  if (t0)
956  {
957  tm->tm_year = t0->tm_year + 1900;
958  tm->tm_mon = t0->tm_mon + 1;
959  tm->tm_mday = t0->tm_mday;
960  tm->tm_hour = t0->tm_hour;
961  tm->tm_min = t0->tm_min;
962  tm->tm_sec = t0->tm_sec;
963 
964  return 0;
965  }
966 
967  return -1;
968 } /* GetEpochTime() */
int tm_hour
Definition: pgtime.h:29
static struct pg_tm tm
Definition: localtime.c:108
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
int tm_year
Definition: pgtime.h:32
static const unsigned __int64 epoch
Definition: gettimeofday.c:34
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28

◆ j2date()

void j2date ( int  ,
int *  ,
int *  ,
int *   
)

Definition at line 294 of file datetime.c.

References MONTHS_PER_YEAR.

Referenced by date2timestamptz_opt_overflow(), date_out(), DecodeDateTime(), DecodeNumber(), DecodeTimeOnly(), do_to_timestamp(), isoweek2date(), isoweekdate2date(), JsonEncodeDateTime(), map_sql_value_to_xml_value(), PGTYPESdate_fmt_asc(), PGTYPESdate_julmdy(), PGTYPESdate_to_asc(), timestamp2tm(), timestamp_pl_interval(), timestamptz_pl_interval(), and ValidateDate().

295 {
296  unsigned int julian;
297  unsigned int quad;
298  unsigned int extra;
299  int y;
300 
301  julian = jd;
302  julian += 32044;
303  quad = julian / 146097;
304  extra = (julian - quad * 146097) * 4 + 3;
305  julian += 60 + quad * 3 + extra / 146097;
306  quad = julian / 1461;
307  julian -= quad * 1461;
308  y = julian * 4 / 1461;
309  julian = ((y != 0) ? ((julian + 305) % 365) : ((julian + 306) % 366))
310  + 123;
311  y += quad * 4;
312  *year = y - 4800;
313  quad = julian * 2141 / 65536;
314  *day = julian - 7834 * quad / 256;
315  *month = (quad + 10) % MONTHS_PER_YEAR + 1;
316 } /* j2date() */
#define MONTHS_PER_YEAR
Definition: timestamp.h:69

◆ ParseDateTime()

int ParseDateTime ( char *  ,
char *  ,
char **  ,
int *  ,
int *  ,
char **   
)

Definition at line 1597 of file dt_common.c.

References DTK_DATE, DTK_NUMBER, DTK_SPECIAL, DTK_STRING, DTK_TIME, DTK_TZ, MAXDATEFIELDS, and pg_tolower().

1599 {
1600  int nf = 0;
1601  char *lp = lowstr;
1602 
1603  *endstr = timestr;
1604  /* outer loop through fields */
1605  while (*(*endstr) != '\0')
1606  {
1607  /* Record start of current field */
1608  if (nf >= MAXDATEFIELDS)
1609  return -1;
1610  field[nf] = lp;
1611 
1612  /* leading digit? then date or time */
1613  if (isdigit((unsigned char) *(*endstr)))
1614  {
1615  *lp++ = *(*endstr)++;
1616  while (isdigit((unsigned char) *(*endstr)))
1617  *lp++ = *(*endstr)++;
1618 
1619  /* time field? */
1620  if (*(*endstr) == ':')
1621  {
1622  ftype[nf] = DTK_TIME;
1623  *lp++ = *(*endstr)++;
1624  while (isdigit((unsigned char) *(*endstr)) ||
1625  (*(*endstr) == ':') || (*(*endstr) == '.'))
1626  *lp++ = *(*endstr)++;
1627  }
1628  /* date field? allow embedded text month */
1629  else if (*(*endstr) == '-' || *(*endstr) == '/' || *(*endstr) == '.')
1630  {
1631  /* save delimiting character to use later */
1632  char *dp = (*endstr);
1633 
1634  *lp++ = *(*endstr)++;
1635  /* second field is all digits? then no embedded text month */
1636  if (isdigit((unsigned char) *(*endstr)))
1637  {
1638  ftype[nf] = (*dp == '.') ? DTK_NUMBER : DTK_DATE;
1639  while (isdigit((unsigned char) *(*endstr)))
1640  *lp++ = *(*endstr)++;
1641 
1642  /*
1643  * insist that the delimiters match to get a three-field
1644  * date.
1645  */
1646  if (*(*endstr) == *dp)
1647  {
1648  ftype[nf] = DTK_DATE;
1649  *lp++ = *(*endstr)++;
1650  while (isdigit((unsigned char) *(*endstr)) || (*(*endstr) == *dp))
1651  *lp++ = *(*endstr)++;
1652  }
1653  }
1654  else
1655  {
1656  ftype[nf] = DTK_DATE;
1657  while (isalnum((unsigned char) *(*endstr)) || (*(*endstr) == *dp))
1658  *lp++ = pg_tolower((unsigned char) *(*endstr)++);
1659  }
1660  }
1661 
1662  /*
1663  * otherwise, number only and will determine year, month, day, or
1664  * concatenated fields later...
1665  */
1666  else
1667  ftype[nf] = DTK_NUMBER;
1668  }
1669  /* Leading decimal point? Then fractional seconds... */
1670  else if (*(*endstr) == '.')
1671  {
1672  *lp++ = *(*endstr)++;
1673  while (isdigit((unsigned char) *(*endstr)))
1674  *lp++ = *(*endstr)++;
1675 
1676  ftype[nf] = DTK_NUMBER;
1677  }
1678 
1679  /*
1680  * text? then date string, month, day of week, special, or timezone
1681  */
1682  else if (isalpha((unsigned char) *(*endstr)))
1683  {
1684  ftype[nf] = DTK_STRING;
1685  *lp++ = pg_tolower((unsigned char) *(*endstr)++);
1686  while (isalpha((unsigned char) *(*endstr)))
1687  *lp++ = pg_tolower((unsigned char) *(*endstr)++);
1688 
1689  /*
1690  * Full date string with leading text month? Could also be a POSIX
1691  * time zone...
1692  */
1693  if (*(*endstr) == '-' || *(*endstr) == '/' || *(*endstr) == '.')
1694  {
1695  char *dp = (*endstr);
1696 
1697  ftype[nf] = DTK_DATE;
1698  *lp++ = *(*endstr)++;
1699  while (isdigit((unsigned char) *(*endstr)) || *(*endstr) == *dp)
1700  *lp++ = *(*endstr)++;
1701  }
1702  }
1703  /* skip leading spaces */
1704  else if (isspace((unsigned char) *(*endstr)))
1705  {
1706  (*endstr)++;
1707  continue;
1708  }
1709  /* sign? then special or numeric timezone */
1710  else if (*(*endstr) == '+' || *(*endstr) == '-')
1711  {
1712  *lp++ = *(*endstr)++;
1713  /* soak up leading whitespace */
1714  while (isspace((unsigned char) *(*endstr)))
1715  (*endstr)++;
1716  /* numeric timezone? */
1717  if (isdigit((unsigned char) *(*endstr)))
1718  {
1719  ftype[nf] = DTK_TZ;
1720  *lp++ = *(*endstr)++;
1721  while (isdigit((unsigned char) *(*endstr)) ||
1722  (*(*endstr) == ':') || (*(*endstr) == '.'))
1723  *lp++ = *(*endstr)++;
1724  }
1725  /* special? */
1726  else if (isalpha((unsigned char) *(*endstr)))
1727  {
1728  ftype[nf] = DTK_SPECIAL;
1729  *lp++ = pg_tolower((unsigned char) *(*endstr)++);
1730  while (isalpha((unsigned char) *(*endstr)))
1731  *lp++ = pg_tolower((unsigned char) *(*endstr)++);
1732  }
1733  /* otherwise something wrong... */
1734  else
1735  return -1;
1736  }
1737  /* ignore punctuation but use as delimiter */
1738  else if (ispunct((unsigned char) *(*endstr)))
1739  {
1740  (*endstr)++;
1741  continue;
1742 
1743  }
1744  /* otherwise, something is not right... */
1745  else
1746  return -1;
1747 
1748  /* force in a delimiter after each field */
1749  *lp++ = '\0';
1750  nf++;
1751  }
1752 
1753  *numfields = nf;
1754 
1755  return 0;
1756 } /* ParseDateTime() */
unsigned char pg_tolower(unsigned char ch)
Definition: pgstrcasecmp.c:122
#define DTK_TZ
Definition: datetime.h:147
#define DTK_NUMBER
Definition: datetime.h:142
#define DTK_TIME
Definition: datetime.h:146
#define MAXDATEFIELDS
Definition: datetime.h:203
#define DTK_STRING
Definition: datetime.h:143
#define DTK_DATE
Definition: datetime.h:145
#define DTK_SPECIAL
Definition: datetime.h:150

◆ PGTYPEStimestamp_defmt_scan()

int PGTYPEStimestamp_defmt_scan ( char **  str,
char *  fmt,
timestamp d,
int *  year,
int *  month,
int *  day,
int *  hour,
int *  minute,
int *  second,
int *  tz 
)

Definition at line 2519 of file dt_common.c.

References day_tab, days, DecodeTimezone(), DTZ, free, isleap, un_fmt_comb::luint_val, months, MONTHS_PER_YEAR, pg_strcasecmp(), pgtypes_alloc(), pgtypes_date_months, pgtypes_date_weekdays_short, pgtypes_defmt_scan(), PGTYPES_TYPE_STRING_MALLOCED, PGTYPES_TYPE_UINT, PGTYPES_TYPE_UINT_LONG, generate_unaccent_rules::str, un_fmt_comb::str_val, szdatetktbl, tm, tm2timestamp(), generate_unaccent_rules::type, TZ, un_fmt_comb::uint_val, and datetkn::value.

Referenced by PGTYPEStimestamp_defmt_asc().

2523 {
2524  union un_fmt_comb scan_val;
2525  int scan_type;
2526 
2527  char *pstr,
2528  *pfmt,
2529  *tmp;
2530  int err = 1;
2531  unsigned int j;
2532  struct tm tm;
2533 
2534  pfmt = fmt;
2535  pstr = *str;
2536 
2537  while (*pfmt)
2538  {
2539  err = 0;
2540  while (*pfmt == ' ')
2541  pfmt++;
2542  while (*pstr == ' ')
2543  pstr++;
2544  if (*pfmt != '%')
2545  {
2546  if (*pfmt == *pstr)
2547  {
2548  pfmt++;
2549  pstr++;
2550  }
2551  else
2552  {
2553  /* Error: no match */
2554  err = 1;
2555  return err;
2556  }
2557  continue;
2558  }
2559  /* here *pfmt equals '%' */
2560  pfmt++;
2561  switch (*pfmt)
2562  {
2563  case 'a':
2564  pfmt++;
2565 
2566  /*
2567  * we parse the day and see if it is a week day but we do not
2568  * check if the week day really matches the date
2569  */
2570  err = 1;
2571  j = 0;
2572  while (pgtypes_date_weekdays_short[j])
2573  {
2574  if (strncmp(pgtypes_date_weekdays_short[j], pstr,
2575  strlen(pgtypes_date_weekdays_short[j])) == 0)
2576  {
2577  /* found it */
2578  err = 0;
2579  pstr += strlen(pgtypes_date_weekdays_short[j]);
2580  break;
2581  }
2582  j++;
2583  }
2584  break;
2585  case 'A':
2586  /* see note above */
2587  pfmt++;
2588  err = 1;
2589  j = 0;
2590  while (days[j])
2591  {
2592  if (strncmp(days[j], pstr, strlen(days[j])) == 0)
2593  {
2594  /* found it */
2595  err = 0;
2596  pstr += strlen(days[j]);
2597  break;
2598  }
2599  j++;
2600  }
2601  break;
2602  case 'b':
2603  case 'h':
2604  pfmt++;
2605  err = 1;
2606  j = 0;
2607  while (months[j])
2608  {
2609  if (strncmp(months[j], pstr, strlen(months[j])) == 0)
2610  {
2611  /* found it */
2612  err = 0;
2613  pstr += strlen(months[j]);
2614  *month = j + 1;
2615  break;
2616  }
2617  j++;
2618  }
2619  break;
2620  case 'B':
2621  /* see note above */
2622  pfmt++;
2623  err = 1;
2624  j = 0;
2625  while (pgtypes_date_months[j])
2626  {
2627  if (strncmp(pgtypes_date_months[j], pstr, strlen(pgtypes_date_months[j])) == 0)
2628  {
2629  /* found it */
2630  err = 0;
2631  pstr += strlen(pgtypes_date_months[j]);
2632  *month = j + 1;
2633  break;
2634  }
2635  j++;
2636  }
2637  break;
2638  case 'c':
2639  /* XXX */
2640  break;
2641  case 'C':
2642  pfmt++;
2643  scan_type = PGTYPES_TYPE_UINT;
2644  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2645  *year = scan_val.uint_val * 100;
2646  break;
2647  case 'd':
2648  case 'e':
2649  pfmt++;
2650  scan_type = PGTYPES_TYPE_UINT;
2651  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2652  *day = scan_val.uint_val;
2653  break;
2654  case 'D':
2655 
2656  /*
2657  * we have to concatenate the strings in order to be able to
2658  * find the end of the substitution
2659  */
2660  pfmt++;
2661  tmp = pgtypes_alloc(strlen("%m/%d/%y") + strlen(pstr) + 1);
2662  strcpy(tmp, "%m/%d/%y");
2663  strcat(tmp, pfmt);
2664  err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
2665  free(tmp);
2666  return err;
2667  case 'm':
2668  pfmt++;
2669  scan_type = PGTYPES_TYPE_UINT;
2670  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2671  *month = scan_val.uint_val;
2672  break;
2673  case 'y':
2674  case 'g': /* XXX difference to y (ISO) */
2675  pfmt++;
2676  scan_type = PGTYPES_TYPE_UINT;
2677  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2678  if (*year < 0)
2679  {
2680  /* not yet set */
2681  *year = scan_val.uint_val;
2682  }
2683  else
2684  *year += scan_val.uint_val;
2685  if (*year < 100)
2686  *year += 1900;
2687  break;
2688  case 'G':
2689  /* XXX difference to %V (ISO) */
2690  pfmt++;
2691  scan_type = PGTYPES_TYPE_UINT;
2692  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2693  *year = scan_val.uint_val;
2694  break;
2695  case 'H':
2696  case 'I':
2697  case 'k':
2698  case 'l':
2699  pfmt++;
2700  scan_type = PGTYPES_TYPE_UINT;
2701  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2702  *hour += scan_val.uint_val;
2703  break;
2704  case 'j':
2705  pfmt++;
2706  scan_type = PGTYPES_TYPE_UINT;
2707  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2708 
2709  /*
2710  * XXX what should we do with that? We could say that it's
2711  * sufficient if we have the year and the day within the year
2712  * to get at least a specific day.
2713  */
2714  break;
2715  case 'M':
2716  pfmt++;
2717  scan_type = PGTYPES_TYPE_UINT;
2718  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2719  *minute = scan_val.uint_val;
2720  break;
2721  case 'n':
2722  pfmt++;
2723  if (*pstr == '\n')
2724  pstr++;
2725  else
2726  err = 1;
2727  break;
2728  case 'p':
2729  err = 1;
2730  pfmt++;
2731  if (strncmp(pstr, "am", 2) == 0)
2732  {
2733  *hour += 0;
2734  err = 0;
2735  pstr += 2;
2736  }
2737  if (strncmp(pstr, "a.m.", 4) == 0)
2738  {
2739  *hour += 0;
2740  err = 0;
2741  pstr += 4;
2742  }
2743  if (strncmp(pstr, "pm", 2) == 0)
2744  {
2745  *hour += 12;
2746  err = 0;
2747  pstr += 2;
2748  }
2749  if (strncmp(pstr, "p.m.", 4) == 0)
2750  {
2751  *hour += 12;
2752  err = 0;
2753  pstr += 4;
2754  }
2755  break;
2756  case 'P':
2757  err = 1;
2758  pfmt++;
2759  if (strncmp(pstr, "AM", 2) == 0)
2760  {
2761  *hour += 0;
2762  err = 0;
2763  pstr += 2;
2764  }
2765  if (strncmp(pstr, "A.M.", 4) == 0)
2766  {
2767  *hour += 0;
2768  err = 0;
2769  pstr += 4;
2770  }
2771  if (strncmp(pstr, "PM", 2) == 0)
2772  {
2773  *hour += 12;
2774  err = 0;
2775  pstr += 2;
2776  }
2777  if (strncmp(pstr, "P.M.", 4) == 0)
2778  {
2779  *hour += 12;
2780  err = 0;
2781  pstr += 4;
2782  }
2783  break;
2784  case 'r':
2785  pfmt++;
2786  tmp = pgtypes_alloc(strlen("%I:%M:%S %p") + strlen(pstr) + 1);
2787  strcpy(tmp, "%I:%M:%S %p");
2788  strcat(tmp, pfmt);
2789  err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
2790  free(tmp);
2791  return err;
2792  case 'R':
2793  pfmt++;
2794  tmp = pgtypes_alloc(strlen("%H:%M") + strlen(pstr) + 1);
2795  strcpy(tmp, "%H:%M");
2796  strcat(tmp, pfmt);
2797  err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
2798  free(tmp);
2799  return err;
2800  case 's':
2801  pfmt++;
2802  scan_type = PGTYPES_TYPE_UINT_LONG;
2803  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2804  /* number of seconds in scan_val.luint_val */
2805  {
2806  struct tm *tms;
2807  time_t et = (time_t) scan_val.luint_val;
2808 
2809  tms = gmtime(&et);
2810 
2811  if (tms)
2812  {
2813  *year = tms->tm_year + 1900;
2814  *month = tms->tm_mon + 1;
2815  *day = tms->tm_mday;
2816  *hour = tms->tm_hour;
2817  *minute = tms->tm_min;
2818  *second = tms->tm_sec;
2819  }
2820  else
2821  err = 1;
2822  }
2823  break;
2824  case 'S':
2825  pfmt++;
2826  scan_type = PGTYPES_TYPE_UINT;
2827  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2828  *second = scan_val.uint_val;
2829  break;
2830  case 't':
2831  pfmt++;
2832  if (*pstr == '\t')
2833  pstr++;
2834  else
2835  err = 1;
2836  break;
2837  case 'T':
2838  pfmt++;
2839  tmp = pgtypes_alloc(strlen("%H:%M:%S") + strlen(pstr) + 1);
2840  strcpy(tmp, "%H:%M:%S");
2841  strcat(tmp, pfmt);
2842  err = PGTYPEStimestamp_defmt_scan(&pstr, tmp, d, year, month, day, hour, minute, second, tz);
2843  free(tmp);
2844  return err;
2845  case 'u':
2846  pfmt++;
2847  scan_type = PGTYPES_TYPE_UINT;
2848  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2849  if (scan_val.uint_val < 1 || scan_val.uint_val > 7)
2850  err = 1;
2851  break;
2852  case 'U':
2853  pfmt++;
2854  scan_type = PGTYPES_TYPE_UINT;
2855  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2856  if (scan_val.uint_val > 53)
2857  err = 1;
2858  break;
2859  case 'V':
2860  pfmt++;
2861  scan_type = PGTYPES_TYPE_UINT;
2862  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2863  if (scan_val.uint_val < 1 || scan_val.uint_val > 53)
2864  err = 1;
2865  break;
2866  case 'w':
2867  pfmt++;
2868  scan_type = PGTYPES_TYPE_UINT;
2869  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2870  if (scan_val.uint_val > 6)
2871  err = 1;
2872  break;
2873  case 'W':
2874  pfmt++;
2875  scan_type = PGTYPES_TYPE_UINT;
2876  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2877  if (scan_val.uint_val > 53)
2878  err = 1;
2879  break;
2880  case 'x':
2881  case 'X':
2882  /* XXX */
2883  break;
2884  case 'Y':
2885  pfmt++;
2886  scan_type = PGTYPES_TYPE_UINT;
2887  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2888  *year = scan_val.uint_val;
2889  break;
2890  case 'z':
2891  pfmt++;
2892  scan_type = PGTYPES_TYPE_STRING_MALLOCED;
2893  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2894  if (!err)
2895  {
2896  err = DecodeTimezone(scan_val.str_val, tz);
2897  free(scan_val.str_val);
2898  }
2899  break;
2900  case 'Z':
2901  pfmt++;
2902  scan_type = PGTYPES_TYPE_STRING_MALLOCED;
2903  err = pgtypes_defmt_scan(&scan_val, scan_type, &pstr, pfmt);
2904  if (!err)
2905  {
2906  /*
2907  * XXX use DecodeSpecial instead? Do we need strcasecmp
2908  * here?
2909  */
2910  err = 1;
2911  for (j = 0; j < szdatetktbl; j++)
2912  {
2913  if ((datetktbl[j].type == TZ || datetktbl[j].type == DTZ) &&
2914  pg_strcasecmp(datetktbl[j].token,
2915  scan_val.str_val) == 0)
2916  {
2917  *tz = -datetktbl[j].value;
2918  err = 0;
2919  break;
2920  }
2921  }
2922  free(scan_val.str_val);
2923  }
2924  break;
2925  case '+':
2926  /* XXX */
2927  break;
2928  case '%':
2929  pfmt++;
2930  if (*pstr == '%')
2931  pstr++;
2932  else
2933  err = 1;
2934  break;
2935  default:
2936  err = 1;
2937  }
2938  }
2939  if (!err)
2940  {
2941  if (*second < 0)
2942  *second = 0;
2943  if (*minute < 0)
2944  *minute = 0;
2945  if (*hour < 0)
2946  *hour = 0;
2947  if (*day < 0)
2948  {
2949  err = 1;
2950  *day = 1;
2951  }
2952  if (*month < 0)
2953  {
2954  err = 1;
2955  *month = 1;
2956  }
2957  if (*year < 0)
2958  {
2959  err = 1;
2960  *year = 1970;
2961  }
2962 
2963  if (*second > 59)
2964  {
2965  err = 1;
2966  *second = 0;
2967  }
2968  if (*minute > 59)
2969  {
2970  err = 1;
2971  *minute = 0;
2972  }
2973  if (*hour > 24 || /* test for > 24:00:00 */
2974  (*hour == 24 && (*minute > 0 || *second > 0)))
2975  {
2976  err = 1;
2977  *hour = 0;
2978  }
2979  if (*month > MONTHS_PER_YEAR)
2980  {
2981  err = 1;
2982  *month = 1;
2983  }
2984  if (*day > day_tab[isleap(*year)][*month - 1])
2985  {
2986  *day = day_tab[isleap(*year)][*month - 1];
2987  err = 1;
2988  }
2989 
2990  tm.tm_sec = *second;
2991  tm.tm_min = *minute;
2992  tm.tm_hour = *hour;
2993  tm.tm_mday = *day;
2994  tm.tm_mon = *month;
2995  tm.tm_year = *year;
2996 
2997  tm2timestamp(&tm, 0, tz, d);
2998  }
2999  return err;
3000 }
static const datetkn datetktbl[]
Definition: dt_common.c:20
static const unsigned int szdatetktbl
Definition: dt_common.c:486
char * days[]
Definition: dt_common.c:495
int tm_hour
Definition: pgtime.h:29
#define isleap(y)
Definition: datetime.h:271
#define PGTYPES_TYPE_UINT_LONG
#define TZ
Definition: datetime.h:96
int32 value
Definition: datetime.h:212
int pg_strcasecmp(const char *s1, const char *s2)
Definition: pgstrcasecmp.c:36
static int DecodeTimezone(char *str, int *tzp)
Definition: dt_common.c:1499
static struct pg_tm tm
Definition: localtime.c:108
#define MONTHS_PER_YEAR
Definition: timestamp.h:69
#define PGTYPES_TYPE_UINT
char * months[]
Definition: dt_common.c:493
char * pgtypes_alloc(long size)
Definition: common.c:10
int tm_mday
Definition: pgtime.h:30
int PGTYPEStimestamp_defmt_scan(char **str, char *fmt, timestamp *d, int *year, int *month, int *day, int *hour, int *minute, int *second, int *tz)
Definition: dt_common.c:2519
int tm_mon
Definition: pgtime.h:31
char * pgtypes_date_weekdays_short[]
Definition: dt_common.c:497
#define PGTYPES_TYPE_STRING_MALLOCED
const int day_tab[2][13]
Definition: dt_common.c:14
#define free(a)
Definition: header.h:65
int tm2timestamp(struct pg_tm *tm, fsec_t fsec, int *tzp, Timestamp *result)
Definition: timestamp.c:1889
#define DTZ
Definition: datetime.h:97
int tm_year
Definition: pgtime.h:32
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28
char * pgtypes_date_months[]
Definition: dt_common.c:499
static int pgtypes_defmt_scan(union un_fmt_comb *scan_val, int scan_type, char **pstr, char *pfmt)
Definition: dt_common.c:2457

◆ tm2timestamp()

int tm2timestamp ( struct tm ,
fsec_t  ,
int *  ,
timestamp  
)

Definition at line 40 of file timestamp.c.

References date2j(), dt2local(), IS_VALID_JULIAN, IS_VALID_TIMESTAMP, time2t(), and USECS_PER_DAY.

41 {
42  int dDate;
43  int64 time;
44 
45  /* Prevent overflow in Julian-day routines */
47  return -1;
48 
49  dDate = date2j(tm->tm_year, tm->tm_mon, tm->tm_mday) - date2j(2000, 1, 1);
50  time = time2t(tm->tm_hour, tm->tm_min, tm->tm_sec, fsec);
51  *result = (dDate * USECS_PER_DAY) + time;
52  /* check for major overflow */
53  if ((*result - time) / USECS_PER_DAY != dDate)
54  return -1;
55  /* check for just-barely overflow (okay except time-of-day wraps) */
56  /* caution: we want to allow 1999-12-31 24:00:00 */
57  if ((*result < 0 && dDate > 0) ||
58  (*result > 0 && dDate < -1))
59  return -1;
60  if (tzp != NULL)
61  *result = dt2local(*result, -(*tzp));
62 
63  /* final range check catches just-out-of-range timestamps */
64  if (!IS_VALID_TIMESTAMP(*result))
65  return -1;
66 
67  return 0;
68 } /* tm2timestamp() */
static int64 time2t(const int hour, const int min, const int sec, const fsec_t fsec)
Definition: timestamp.c:20
int tm_hour
Definition: pgtime.h:29
static timestamp dt2local(timestamp dt, int tz)
Definition: timestamp.c:26
static struct pg_tm tm
Definition: localtime.c:108
int tm_mday
Definition: pgtime.h:30
int tm_mon
Definition: pgtime.h:31
#define IS_VALID_JULIAN(y, m, d)
Definition: timestamp.h:155
#define USECS_PER_DAY
Definition: timestamp.h:91
int date2j(int y, int m, int d)
Definition: datetime.c:269
#define IS_VALID_TIMESTAMP(t)
Definition: timestamp.h:195
int tm_year
Definition: pgtime.h:32
int tm_sec
Definition: pgtime.h:27
int tm_min
Definition: pgtime.h:28

◆ TrimTrailingZeros()

void TrimTrailingZeros ( char *  )

Definition at line 722 of file dt_common.c.

Referenced by AppendSeconds(), and EncodeDateTime().

723 {
724  int len = strlen(str);
725 
726  /* chop off trailing zeros... but leave at least 2 fractional digits */
727  while (*(str + len - 1) == '0' && *(str + len - 3) != '.')
728  {
729  len--;
730  *(str + len) = '\0';
731  }
732 }

Variable Documentation

◆ day_tab

◆ days

◆ months

◆ pgtypes_date_months

char* pgtypes_date_months[]

◆ pgtypes_date_weekdays_short

char* pgtypes_date_weekdays_short[]